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8 Ways to Fix 0x800b0003 Error in Windows 10

Windows update Error 0x800b0003 is an error code that indicates a problem with the digital signature of a file or driver. It can occur when installing a new program or updating Windows. This message may appear if a required certificate is not within its validity period or the signature of the certificate cannot be verified. If you continuously face this issue, try the methods discussed below to fix 0x800b0003 on Windows 10 PC.

8 Ways to Fix 0x800b0003 Error in Windows 10

How to Fix 0x800b0003 Update Error in Windows 10

Error 0x800b0003 Windows 10 can occur due to several reasons, such as:

  • The file or driver that is being installed has an invalid or corrupt digital signature.
  • The system is unable to connect to the certificate revocation list (CRL) server to verify the digital signature.
  • The system files required to verify the digital signature are corrupted or outdated.
  • The Trusted Root Certification Authorities store on the system is missing or contains invalid certificates.
  • A third-party security software or Windows firewall is blocking the connection to the CRL server.

Basic Checks/Tips

It’s recommended to

  • check the digital signature of the file or driver that is being installed
  • ensure that the system is connected to the internet
  • check for Windows updates
  • try disabling any third-party security software temporarily

Method 1: Launch Windows in Safe Mode and Update

Safe Mode is a diagnostic startup mode in Windows operating systems used to obtain limited access to Windows when the operating system is unable to start normally. This is useful for troubleshooting and resolving certain types of problems, such as driver conflicts or malware infections. To launch Windows in Safe Mode, read out our guide.

From Startup Settings window choose the functions key to Enable Safe Mode

Once in Safe Mode, you can then try to troubleshoot and resolve this error. This error is related to Windows Update, and it can be caused by a variety of factors, such as an incomplete update, a corrupted system file, or an issue with the update server.

Method 2: Perform Clean Boot

Performing a clean boot is a troubleshooting technique that can help identify if a conflict with another program is causing the error 0x800b0003 in Windows Update. To do so read out our guide on How to perform clean boot.

Move over to the Services tab and tick the box next to Hide all Microsoft services and click Disable all

Also Read: 9 Ways to Fix Windows Update Error 0X80070003

Method 3: Run Windows Update Troubleshooter

Note: It’s important to note that before trying any of these steps, you should create a backup of your important data, because some of them may affect your system. Read out our guide on How to Run Windows update Troubleshoot.

select Windows update

Check to see if the error 0x800b0003 has been resolved. If not, try repeating the above steps or move on to other troubleshooting steps mentioned below.

Method 4: Reset Windows Update Components

You might have noticed the Windows update processes not working properly. At that time, users may have to think about the reset update components option, especially when the Windows Update agent-related services stop working on their system. Also, when some of the update components get corrupt or Windows has issues while updating the cache, reset windows update components script can also come into play. Read out our guide on How to Reset Windows update components to fix error 0x800b0003.

Right click on Windows Update Service and select Restart

Also Read: Fix Microsoft Store Error 0X8A150006 in Windows 10

Method 5: Update Device Drivers

When trying to update Windows and encountering error 0x800b0003, updating the drivers on your computer can help resolve the issue. This is because error 0x800b0003 windows update can be caused by a problem with the digital signature of a file or driver. Read out our guide to update device drivers on Windows 10.

search automatically for updated driver software

Method 6: Disable Antivirus Temporarily (If Applicable)

Disabling your antivirus software temporarily can help resolve the issue by allowing the connection to the CRL server and allowing the update or installation to proceed. Keep in mind that disabling your antivirus software can leave your computer vulnerable to malware and other security threats, so it is important to only disable it temporarily and re-enable it as soon as the update or installation is complete. Read our guide to disable your antivirus software temporarily in Windows 10:

click the Turn off button. 8 Ways to Fix 0x800b0003 Error in Windows 10

Note: It’s also important to know that disabling your antivirus software is not a permanent solution to the problem, and it’s recommended to check for any software updates or to contact the software vendor for assistance.

Also Read: Fix Microsoft Outlook Error 0x80040115

Method 7: Run Malware Scan

The error can be caused by a variety of issues, including malware infections. One way to potentially fix this error is by scanning your computer with an anti-virus program. An anti-virus program is a type of software that is designed to detect and remove malware, such as viruses, worms, trojans, and spyware, from your computer. By running a scan, the anti-virus program will search for and identify any malicious software that may be causing the error.

To scan your computer with an anti-virus program, Read out our guide on How do I Run a virus scan on my computer.

Click on Start Actions under Current threats

Note: know that many Windows 10 have built-in anti-virus programs, you can check if it’s enabled and updated in the Windows security settings. Also, it’s a good practice to have more than one anti-virus program installed on your computer, as different programs may identify different types of malwares.

Also Read: How to Fix Microsoft Store Error 0x80073cfb

Method 8: Perform System Restore

System Restore is a feature in Windows 10 that allows you to revert your computer’s state to a previous point in time.

When you perform a System Restore, your computer’s settings, installed programs, and system files will be restored to the state they were in at the selected restore point. This can help fix problems caused by software conflicts, malware infections, or system corruption. To use System Restore to fix error 0x800b0003 windows 10.

Note: Please note that System Restore will not affect your personal files, but you will lose all installed programs and updates that were added after the restore point was created.

Click next on the system restore page. 8 Ways to Fix 0x800b0003 Error in Windows 10

If after all the methods the error still persists, it might be a good idea to contact Microsoft support or a professional technician to help you to fix the issue.

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Error 0x800b0003 in Windows 10 can be caused by a variety of issues, such as software conflicts, or malware. To fix this error, you can try several different methods mentioned above. Please let us know in the comments section below which approach you found to be most effective.

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