How To Solve “M3Plugin.dll Missing” Errors

M3plugin.dll is a file used by “My Web Search” – an Internet toolbar which is commonly associated with FireFox. Unfortunately, this toolbar often causes the error “M3plugin.dll is missing” or “M3plugin.dll Not Found” on many Windows computers. In order to fix this, you need to follow a simple method to make sure that you can cure the problems that first cause this error.

What Causes M3Plugin.dll Errors?

One of the main errors that people are reporting for M3plugin.dll is this:

“RunDLL”
Error loading C:\PROGRA~1\MYWEBS~1\bar\2.bin\M3PLUGIN.dll

This is typically caused by either having the file misplaced on your PC or by having the toolbar try and load at startup.

How To Solve M3Plugin.dll Errors

Step 1  – Prevent MyWebSearch Loading At Startup

The first way to stop this error is to prevent the program that uses it from loading at startup. It’s often the case that the MyWebSearch toolbar is not able to locate the file it needs because it does not have access to it until you are using your web browser. Here’s what you need to do to stop this program loading at boot:

1) Click Start > Run (search “run” in Vista & Win7)

2) On the run menu, type msconfig & hit Enter

3) On the window that loads, click on “Startup” tab

4) Locate the “MyWebSearch” program

5) Untick the checkbox next to its listing

6) Click “OK”

This will prevent the program from loading at startup and should stop the error from showing as well.

Step 2 – Perform A Registry Cleanout

It’s often the case that the registry will have an incomplete or corrupted setting for M3Plugin.dll. In order to fix this, you should correct a common registry problem that  can cause your PC to show the errors you’re seeing. However, before we proceed you must be warned that manually changing registry settings can have a damaging impact on your computer. In order to ensure your PC is going to be as smooth as possible, we recommend using a registry cleaner such as “RegAce System Suite” to perform this step.

1) Browse To C:\Windows\

2) Load Regedit.exe

3) Press CTRL + F & search for m3plugin.dll

4) Delete any entries that appear

5) On the left-hand pane, browse to HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon

6) Double click the registry key “Shell” in the right handpane

7) Delete any value other than “Explorer.exe” – and keep Explorer.exe intact

8) Double click on the “userinit” key in the right hand pane

9) Make sure the key is “C:\WINDOWS\system32\userinit.exe“

10) Delete any value other than “C:\WINDOWS\system32\userinit.exe” in this key

11) Exit RegEdit

12) Restart your PC

Highly Recommended – Use A Registry Cleaner

– Download This Registry Cleaner

The registry is a very important part of your computer, and you can easily damage or corrupt it by deleting the wrong file / setting. In order to keep your computer running as smoothly and effectively as possible, you should use a registry cleaner to fix the errors that your computer might have. You can see our recommended registry cleaner below: