Steps To Fix The 0x800B0004 Error On Windows

The 0x800B0004 error is generated when the “SUS” Synchronization fails on your Windows 2000 or Windows Server 2003 PC. This error normally suggests that there’s either a problem with the downloaded files that your computer needs, a timing issue or some other issue on your system.

0x800B0004 Error Messages

The error messages that 0x800B0004 has normally occur during SUS Synchronization with the Upstream Server & Synchronization failure:

Automatic Sync Started- Sunday, April 17, 2005 2:46:42 AM Successful with Errors
Updates Added:
None
Updates Removed:
None
Reissued Update(s):
None
Errors:
Security Update for Windows 2000 (KB871250): Failed to download from URL
‘http://download.windowsupdate.com/msdownload/update/v3-19990518/cabpool/Windows
2000-KB871250-x86-ENU_908d1217ac973f29c6f0f33bfacd813.EXE’. (Error 0x800B0004:
The subject is not trusted for the specified action.) –
Windows2000-KB871250-x86-ENU_908d1217ac973f29c6f0f33bfacd813.EXE

What Causes The 0x800B0004 Error Message?

The 0x800B0004 error can be caused by numerous issues including:

• Registry errors
• Virus infections
• A corrupted package already downloaded (or partially downloaded) or having problems
• Damaged files or missing registration information
• A cryptographic issue.

How To Fix 0x800B0004 Errors On Your PC

Step 1 – Delete the partially downloaded contents of the corrupted package.

You can normally find these update packages in the C:\Windows\SoftwareDistribution folder of your system. You should try renaming this folder to “SoftwareDistributionBACKUP” and creating a new one to replace it.

Step 2 – Run “File Signature Verification”

File signature verification is basically where you see if all the files on your system are “signed” – which means that they are legitimate and 100% working. To do this, you need to use the “Sigverif” feature of Windows below:

1. From the Start menu, select Run.
2. In the Open field, type sigverif
3. Select the OK button.
4. Follow the prompts throughout the File Signature Verification process which is logged in SIGVERIF.TXT
5. Check the summary of SIGVERIF.TXT, make sure Unsigned Files = 0.
6. If there are unsigned files on your system, you need to talk to the developer of those files to sign them.

Step 3 – Use Windows File Checker (sfc)

It’s vital that you’re able to see whether all the files that Windows has are reliable and readable. Essentially, this process cans all protected system files and replaces incorrect versions with correct Microsoft versions.To do this, you can use the inbuilt scannow feature of Windows to help check all the files on your computer:

1. From the Start menu, select Run.
2. In the Open field, type sfc /scannow (Note: There is a space between sfc and /scannow)
3. Select the OK button.
4. Follow the prompts throughout the System File Checker process.
5. Reboot the computer when System File Checker completes.
6. Test to determine if the issue is resolved. If the issue is resolved, skip the remaining steps. If the issue is not resolved, continue to the next step.

Step 4 – Run Internet Explorer Repair

Internet Explorer is also a big cause of the 0x800B0004 error on your PC. You should ensure it’s not causing any problems by using the IE Repair tool in Windows:

1. Search for IE.inf from C:\WINDOWS\inf
2. Right click and select Install
3. If the issue is resolved, skip the remaining steps. If the issue is not resolved, continue to the next step.

Step 5 – Clean The Registry

– Download This Registry Cleaner

The registry is a central database which stores all sorts of information and files for your system. This database is the central part of Windows which your system uses every day to help it remember everything from your latest emails to your desktop wallpaper. Unfortunately, the registry is also a big cause of problems as it is continually being saved in the wrong way by your PC. This is a big problem that can cause the 0x800B0004 error and other errors. To make sure the registry is not to blame, you should use a ‘registry cleaner’ to scan through the registry database and make sure that there are no damaged or corrupt settings inside it. You can download our recommended registry tool below: