Does your Windows keep crashing and display an lsass.exe error? Lsass.exe is one of the core Windows processes that is extremely prone to errors that are not easy to fix. Disabling lsass.exe only makes things worse and doesn’t fix the errors. On top of that, viruses and malware often pretend to be the lsass.exe file. I’m sure many of you remember the famous sasser worm. So, let’s see what you can do when you get the lsass.exe error and how you can fix lsass.exe.

Lsass.exe stands for Local Security Authentication Server and it’s responsible for verifying users when they log into Windows. In addition to that, lsass.exe is responsible for enforcing security policies within Windows. Basically, it’s lsass.exe that checks your log in credentials and either grants or denies access. If something goes wrong and you force-close the lsass.exe process, you will get a Windows errors and will have to reboot your computer.

The worst bit about the lsass.exe error is that it can corrupt your operating system in such a way, that it will become unusable and you will have to reformat your hard drive and reinstall Windows. This error can be caused by a trojan pretending to be lsass.exe. Usually this trojan is called Isass.exe, which looks similar enough for you not to notice it when taking a look at running processes.

So, how to fix the lsass.exe error? The first thing you should do is simply reboot your computer. Believe it or not, but lsass.exe can have glitches and a simple reboot fixes the problem.

If restarting your computer doesn’t help, then the first thing you should do is scan your computer with a reliable anti-malware program. Try using Malwarebytes’ Anti-Malware – a free program that can detect and remove most types of malware. The best way to remove the Isass.exe virus is to run Malwarebytes’ in Windows Safe Mode. Here is how:

1. Reboot your computer and start pressing F8 when the screen is still black
2. The Windows boot menu will appear. Use the arrow keys on your keyboard to navigate to Safe Mode and press Enter
3. Your computer will boot in Safe Mode, which should disable the virus
4. Run Malwarebytes in Safe Mode and delete everything it finds
5. Reboot your PC, keep tapping F8 and select Normal Mode

If your lsass.exe errors were caused by a trojan, they should be fixed. But what if the lsass.exe file was corrupted and the anti-malware program didn’t fix it? Then you need to apply the lsass.exe error fix.

To apply the lsass.exe error fix, you need to fix the lsass.exe settings in the Windows registry. Of course, you can do it manually, but it’s much easier to use a registry repair tool to fix lsass.exe. Simply download the recommended tool, install it and run a scan. Then let the program fix all detected registry errors and reboot your computer. The lsass.exe error fix will be applied and all errors should be gone.

What Causes Windows Error 2

An error like this would normally be caused by the following  conditions:

• Registry keys have been damaged or corrupt
• Windows settings have been damaged
• Windows Update is not working properly

How To Fix The Windows Error 2

If you received the error after cancelling the update then it is recommended that you try to install the language pack again and do not cancel the installation.

However if you received the error but did not cancel the update then it is recommended that you restart your computer and then try to install the language pack again.

Step 1 - Install The Language Pack Again

• Open Windows Update by clicking the Start button, clicking All Programs, and then clicking Windows Update.
• In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.
• Click View available updates.
• Select the language pack that you want to install, and then click Install. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

• Update for Windows Vista (KB971029)
• nVidia – Display – NVIDIA GeForce 6150SE nForce 430

What Causes The C355 Error

This particular error would normally be caused when either one the following conditions are true:

• Specific registry keys have been damaged or corrupt
• Windows settings have changed
• The updates are damaged or are not configured properly

How To Fix The C355 Error

Step 1 – Download The Updates In Safe Mode

Because the the updates are not downloading properly it is recommended that you switch your computer into safe mode before you install the updates as this will eliminate any chance of programs or other things getting in the way of the update. To turn your computer into Safe Mode follow the instructions below:

• Restart your computer
• When your computer is beginning to load hit the F8 key repeatedly
• You will then be presented with some options, you should use the arrow keys and select ‘Safe Mode’
• From there are on you will be able to download the updates

Step 2 - Clean Out The Registry

• Download This Registry Cleaner

One of the big causes of C355 errors is through the “registry” database of your computer. This is a large database which stores vital information & settings for your PC, and is used continually to help Windows to read the files, settings & options that it needs to run. Although the registry is one of the most important parts of every Windows system, it’s continually causing a large number of problems thanks to the way it will often become corrupted and unreadable. This is the cause behind many C355 errors, and needs to be resolved by using a reliable “registry cleaner” application.

This step is best completed by downloading Frontline Registry Cleaner, and letting it clean out any of the problems that your system may have inside.

Scrrun.dll is a file which is directly linked to the Windows Vista operating system, however a lot of people have switched on their computers and only to find that an error has appeared with details linked to the Sccrum.dll file during the boot stage. This error is most likely caused by either a version mis-match (the file is out of date), or your computer has some sort of error inside its core files.

What Causes The Scrrun.dll Error

Usually these sorts of errors occur because of problems that have risen from somewhere else, problems such as:

Windows settings have changed

Registry keys have been deleted

Specific files have moved and placed somewhere else

How To Fix The Sccrun.dll Error

Step 1 - Manually Replace The Scrrun.dll File

The Sccrun.dll contains libraries for reading and writing scripts and text files, so it is important for a Windows Vista operating system to have this file. To manually replace this file follow the necessary steps:

Download Scrrun.dll from the Internet

Save the Scrun.dll file onto your computer’s hard drive

Browse to c:\Windows\System32

Locate the current Scrrun.dll on your system

Rename the current Scrrun.dll to ScrrunBACKUP.dll

Copy & paste the new Scrrun.dll into C:\Windows\System32

Click Start > Run (Or search ”run” on Vista & Win7)

Type “cmd” in the box that appears

Type “regsvr32 Scrrun.dll” on the black screen

Press Enter

Step 2 – Update Windows

It is important to keep your system updated so it can operate as fast and smoothly as possible. To update Windows follow the necessary steps:

Click Start

All Programs

Windows Update

Follow the wizard and install all updates

Restart your computer

Step 3 - Clean Out The Registry

• Download This Registry Cleaner

One of the big causes of Scrrun.dll errors is through the “registry” database of your computer. This is a large database which stores vital information & settings for your PC, and is used continually to help Windows to read the files, settings & options that it needs to run. Although the registry is one of the most important parts of every Windows system, it’s continually causing a large number of problems thanks to the way it will often become corrupted and unreadable. This is the cause behind many Scrrun.dll errors, and needs to be resolved by using a reliable “registry cleaner” application.

This step is best completed by downloading Frontline Registry Cleaner, and letting it clean out any of the problems that your system may have inside.

Npptools.dll is a dynamic link library file, which is used to aid with the installation of software on your computer. The problem is that a lot of these files is that they will continually become damaged or corrupted – which will prevent your computer from being able to process the information it needs to run from it. We’ve found that although NPPTools.dll is continually being used to help load up a large number of programs on your system – but we’ve found that most of the time, this file is either being damaged, corrupted or misplaced. The errors you’re experiencing will show in this format:

“Npptools.dll was not found”

“This application failed to start as the system was unable to locate npptools.dll. Reinstalling the application may fix the error”

“The file npptools.dll is missing“

What Causes The Npptools.dll Error?

Usually when files start going missing or have been damaged it is usually because of a virus infection on your computer that has gone through certain folders and changed, altered or deleted certain files. Viruses that have the capability to do that are usually fake anti-virus infection as they dive deep within your computer and change file structures to suit their environment.

How To Fix The Npptools.dll Error

Step 1 - Re-Install Any Software Causing Errors

The first step is to re-install any programs that will be showing the npptools.dll errors. It’s often the case that games will be unable to process this file correctly, and thus show the errors you’re experiencing. To fix this, you can follow these steps:

Click onto “Start“

Locate “Control Panel” & click it

Click onto “Add / Remove Programs” (Win XP) or “Uninstall A Program” (Win 7)

Click onto the game that’s causing problems

Click “Remove“

Follow the Uninstall Process

Restart Your PC

Re-Install The Program

This will remove the problematic application from your system, and will make sure that your computer is able to properly process the files that it will need to run. We’ve found that this will work for about 80% of systems with the npptools.dll error

Step 2 - Manually Replace NPPTools.dll

Manually replacing the npptools.dll file is probably be the best way to repair the error.  You need to obtain a fresh copy of the dll file and register it onto your Windows system.  Follow these steps to resolve the error:

Download npptools.dll from the Internet

Save the npptools.dll file onto your computer’s hard drive

Browse to c:\Windows\System32

Locate the current npptools.dll on your system

Rename the current npptools.dll to npptoolsBACKUP.dll

Copy & paste the new npptools.dll into C:\Windows\System32

Click Start > Run (Or search ”run” on Vista & Win7)

Type “cmd” in the box that appears

Type “regsvr32 npptools.dll” on the black screen

Press Enter

Step 3 - Clean Out The Registry

• Download This Registry Cleaner

The “registry” of Windows is the main cause of the Npptools.dll error. It’s primarily used to store the likes of your desktop wallpaper, your most recent emails and even your passwords – and is continually being used to help ensure that your system is able to run as smoothly as possible. Although this database is arguably one of the most important parts of your system, it’s continually leading your system to run much slower and with a lot of problems. To resolve this error, it’s essential that you’re able to clean out any of the errors that it may have inside – through using a registry cleaner application.

We recommend using a program called “Frontline Registry Cleaner“, as this tool will scan through your PC and fix any of the issues that it may have inside. We’ve found that this tool is one of the most effective in being able to resolve the problems you’re experiencing on your system, allowing your computer to run much smoother and more effectively as a result.

“Cannot find ac1st16.dll”

“A required .dll file – ac1st16.dll was not found”

“Cannot start Autodesk ObjectDBX. A required component is missing: ac1st16″

“This application failed to start because ac1st16 was not found”

What Causes The Ac1st16.dll Error?

Windows can often save files incorrectly and often in the wrong place which results in them being corrupt and leading them to not work properly. This results in programs not being able to work properly as a specific component is missing or damaged. However it is also the possibility that the file could be outdated and your system is unable to read it properly and so your computer simply thinks it can’t find it. It’s also probable that the file will be disjointed by registry errors inside Windows.

How To Fix The Ac1st16.dll Error

Step 1 - Re-Install Any Software Causing Errors

The first step is to re-install any programs that will be showing the ac1st16.dll errors. It’s often the case that games will be unable to process this file correctly, and thus show the errors you’re experiencing. To fix this, you can follow these steps:

Click onto “Start“

Locate “Control Panel” & click it

Click onto “Add / Remove Programs” (Win XP) or “Uninstall A Program” (Win 7)

Click onto the game that’s causing problems

Click “Remove“

Follow the Uninstall Process

Restart Your PC

Re-Install The Program

This will remove the problematic application from your system, and will make sure that your computer is able to properly process the files that it will need to run. We’ve found that this will work for about 80% of systems with the ac1st16.dll error

Step 2 - Manually Replace ac1st16.dll

Manually replacing the wnaspi32.dll file is probably be the best way to repair the error.  You need to obtain a fresh copy of the dll file and register it onto your Windows system.  Follow these steps to resolve the error:

Download ac1st16.dll from the Internet

Save the ac1st16.dll file onto your computer’s hard drive

Browse to c:\Windows\System32

Locate the current ac1st16.dll on your system

Rename the current ac1st16.dll to ac1st16BACKUP.dll

Copy & paste the new ac1st16.dll into C:\Windows\System32

Click Start > Run (Or search ”run” on Vista & Win7)

Type “cmd” in the box that appears

Type “regsvr32 ac1st16.dll” on the black screen

Press Enter

Step 2 – Clean Out The Registry

• Download This Registry Cleaner

The “registry” of Windows is the main cause of the Ac1st16.dll error. It’s primarily used to store the likes of your desktop wallpaper, your most recent emails and even your passwords – and is continually being used to help ensure that your system is able to run as smoothly as possible. Although this database is arguably one of the most important parts of your system, it’s continually leading your system to run much slower and with a lot of problems. To resolve this error, it’s essential that you’re able to clean out any of the errors that it may have inside – through using a registry cleaner application.

We recommend using a program called “Frontline Registry Cleaner“, as this tool will scan through your PC and fix any of the issues that it may have inside. We’ve found that this tool is one of the most effective in being able to resolve the problems you’re experiencing on your system, allowing your computer to run much smoother and more effectively as a result.

80072EFE Windows Update Error is a problem that’s caused by your PC being unable to correctly process the update settings required to help improve your PC. We’ve found that although this error may seem like a big problem, there are a few simple steps you can use to fix it. This tutorial is going to show you how to resolve the problem in the most effective way.

What Causes The 80072EFE Error?

Windows will have errors with its files

Your system will have registry errors

Windows will not be able to run properly

How To Fix The 80072EFE Error

Step 1 – Use The Windows Update Repair Tool

We highly recommend using the “Windows Update Repair” tool – which is a central feature of all Windows systems that is used to fix the various problems that your system will have inside. You can use the steps outlined inside this part of your system by using these steps:

• Open the Windows Update troubleshooter by clicking the Start button , and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under System and Security, click Fix problems with WindowsUpdate.

Step 2 - Clean Out The Registry Of Windows

• Download This Registry Cleaner

The registry is one of the major causes of a corrupted part of your PC. This is basically a piece of software which Windows computers will use to help them store all the important options that allow your computer to run, and is used continually by all the programs & tools on your system to help repair the various parts of your computer. We’ve found that one of the biggest problems for Windows is the registry will become damaged & corrupted, making it vital that you’re able to clean out all the parts of this system in the most effective way.

We recommend using a program called Frontline Registry Cleaner to scan through your system, and then use the tool to fix the various problems that your PC may have.

The 0×80240016 (80240016) error is caused by your PC’s inability to connect to the updates server, and download the updates required for your PC. We’ve found that this is mainly caused by either malicious software (viruses), or by some of the services / applications installed on your computer blocking the connection to the update service. In order to fix this problem, you need to be able to repair the various problems that your system may have.

What Causes The 80240016 Error?

This error has several possible causes:

Your PC’s settings are damaged / incorrect

Windows does not have the files it needs to run the update

Your PC will be unable to properly connect to the updates sever

The way to resolve the 80240016 error is to make sure that all the possible causes of the problem are resolved. This can be done by first making sure that you can fix any of the possible issues that Windows might have are resolved, as well as then cleaning out all the settings that could be causing a problem for your system.

How To Fix The 80240016 Error

Step 1 - Clean Out Any Viruses / Malware From Your PC

The first step you should take is to clean out any of the viruses that your system may have. It’s often the case that your PC will contract a virus that will block the likes of “Windows Update” From connecting to the update service, and consequently show the error you’re experiencing. To resolve this problem, you should perform these steps:

Click Onto “MalwareBytes”

Download the free version of this tool

Let it perform a FULL SCAN

Clean out any problems that it finds

This will get rid of the infections that will possibly be preventing your system from being able to update. Although trivial, it’s an essential step that many people just skip.

Step 2 - Restart The Windows Update Service

The Windows Update ‘service’ is used to help your computer process all the options & settings that are required to help your PC run. This particular service is used to help process the update settings that your computer will use to run, and is consequently very important. Unfortunately, the Windows Update services will often cause a lot of problems, which can be fixed by restarting them. Here’s how:

Click “Start”

Click “Run” (XP)

Type “CMD” into run box (XP) / search box (Vista & 7)

Press Enter

In black box, type this & press enter after each line:

net stop wuauserv

net start wuauserv

Try Windows update again

Step 3 - Clean Out The “Registry” Of Your System

• Download This Registry Cleaner

You also need to be able to clean out the registry of your PC. This is a large database which all Windows computers use to help them recall all the different pieces of information that are used to help your PC run. The likes of your desktop wallpaper, your most recent emails and even your desktop wallpaper are all kept inside the registry – and are therefore continually being used to help your system to run as smoothly as possible. Unfortunately, the registry is continually causing a lot of problems, and should be fixed by using a registry cleaner tool.

We recommend you download & run a piece of software called “Frontline Registry Cleaner“. This is able to scan & fix the largest number of possible system errors on your PC, and is therefore able to help your PC run as smoothly as possible.

2739 Error

The 2739 error is a common problem which shows when you typically try and use / install Adobe software products on your PC.  The error is most commonly the result of the “Jscript.dll” file not being correctly registered on your system – making it impossible for your PC to read this file, which it needs so much to run. If you’re seeing these errors, the good news is that you can fix the problems you’re seeing with the tutorial on this page.

What Causes The 2739 Error?

This error will typically show in this format:

• “Setup has encountered an error and needs to close. Error Code: 2739.”
• “Error 2739: Could not access JavaScript runtime for custom action”
• “Setup has encountered an error and cannot continue. Contact Adobe”

The error you have is caused by your computer being unable to correctly process a particular file & settings needed to help it perform an installation of Adobe software on your system. This can be fixed by re-registering a particular file which could be damaged on your system.

How To Fix The 2739 Error

Step 1 - Re-Register “JScript.dll” On Your PC

The main problem you have is that the “jscript.dll” (Javascript runtime file) is not running correctly, and consequently needs to be re-registered on your PC to help your computer to read it correctly again. This will allow your computer to read all the settings it requires to run the installer. Here’s what you need to do:

• Click “Start > Run” (alternatively press the Windows Key + R)
• Type “CMD” into the box that appears
• On the black screen that appears, type “regsvr32 -u jscript.dll”
• Press Enter
• Next, type “regsvr32 jscript.dll”
• Press Enter
  
• Try installing again

Step 2 – Clean Out The Registry

• Download This registry cleaner

The 2739 error can often be caused by the settings inside the “registry database” of your computer not working correctly. This is a huge database of all the settings your PC requires to run, and is where Windows keeps a large number of important settings which are required to keep your system running as smoothly as possible. Although the registry is highly important, it’s continually leading a lat of errors to be shown on your system due to it either becoming damaged or corrupted. To resolve this problem, it’s recommended that you use a registry cleaner program, which can be downloaded below.

Error 646

The 646 error is a common problem for millions of Vista computers, which shows when you try and update your PC. The error will generally show because your system will be unable to correctly process the files or settings it requires to install the updates you require. The problem is mainly caused by some of the settings inside your PC being corrupted, but can also be caused by your system not having the correct permissions to install the updates you need.

What Causes The 646 Error?

The error you’re seeing is caused by your PC being unable to process the updates it requires. Every time you try and “update” your PC, it will continually look to connect to the Microsoft updates web server and then download the updates your system requires. The problem you have is either that your PC cannot correctly download the updates, or your system has some sort of issue preventing it from correctly connecting to the Internet & downloading the programs it needs.

Here are some typical causes of the 646 Windows Vista error:

• Your PC has some sort of Internet error
• Windows has settings errors preventing it from working correctly
• Your PC has some conflicting software

How To Fix The 646 Vista Update Error

Step 1 - Use “System Restore” To Roll Back Your PC

The easiest way to resolve this error is to use “System Restore” to fix the problems your PC may have inside. System restore is a common Windows feature which is used to help your computer to run like it did before it started getting errors without losing any of your data or other information. This feature is often overlooked, and can fix most of the errors which Windows encounters. You should begin your fix by using the steps below:

• Click “Start > All Programs“
• Go to “Accessories”
• Once in “Accessories”, click “System Tools”
• In “System Tools, you’ll find the button called “System Restore”, click it.
• Follow the on-screen instructions to restore your PC back to a date when you could update your PC

This will automatically re-send Windows back to the date that you decide, allowing it to repair any of the conflicts or errors which may be preventing the update from commencing. This should work for most people, but if it does not, you should look to use the next step:

Step 2 - Install The “Windows Update Agent”

The “Windows Update Agent” is a program issued by Microsoft to help process the updates that your computer requires to run. If you’re seeing the 646 error, it may mean that there are some updates that are either corrupt or incompatible with your system, leading your PC to run much less reliably when it tries to run them. This can be repaired by using the “Windows Update Agent”, which can be downloaded from this website near the bottom of the page.

Step 3 - Re-Register Windows Update DLL Files

A big problem that causes the 646 error is that Windows will actually somehow damage the files it requires for the updates process to run. If you have this problem, it’s recommended you resolve the issue by re-registering the files that could be damaged or missing. Here’s how:

• Click “Start > Run” (or press WINKEY + R)
• Type “CMD” into the box & Press Enter
• On the black screen that loads, type:
• regsvr32 wuapi.dll & press enter
• regsvr32 wucltux.dll & press enter
• regsvr32 wuwebv.dll & press enter
• regsvr32 jscript.dll & press enter
• regsvr32 msxml3.dll & press enter
• regsvr32 wups2.dll & press enter
• regsvr32 wups.dll & press enter
• regsvr32 wuaueng.dll & press enter

This will allow Windows to correctly read all the potentially damaged DLL files which may be preventing your PC from being able to read the files it needs to run the updates. If you try this and it doesn’t work, you should look to use the next step below:

Step 4 - Repair The Registry Of Your PC

• Download This Registry Cleaner

One of the biggest problems for Windows PCs is the way in which your computer will often damage a lot of the settings it needs to run inside the “registry”. The registry is a large database in the core of Windows which stores everything from your desktop wallpaper to your latest emails. Although this part of your PC is highly important, it’s continually causing a huge number of errors because of the way in which your PC  uses it so much.

One of the main reasons why the 646 error will appear is actually because the registry of your PC will somehow become damaged or corrupted, preventing your system from loading up its features correctly and leading your computer to run much less reliably as a result. To fix this problem, you should download a registry cleaner, install it and then let it fix any of the potential errors inside your system, allowing Windows to run much smoother again.