Support for Office products

Office Support Contact

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

[Fixed] Windows Update Error Code 0x800b0109

With the 0x800b0109 error, it appears your Windows has not failed free from troubles. As a rule, this error is most often encountered when using Windows Update, when installing some software, or when trying to reach some of Microsoft’s services. This can be very exasperating, if not more so when you are incapable of updating your system or installing much needed applications.

In this article, we’ll help you understand what the 0x800b0109 error means, what triggers it, and how you can fix it correctly without any hassle.

What is Signified by Error Code “0x800b0109”?

The 0x800b0109 error code indicates the problem with the certificate trust chain or most likely the inability of the system to validate a particular certificate. In this scenario, the word ‘certificate’ refers to a security measure that ensures the authenticity of a website, software, or an update. In the absence of a valid certificate, which may be due to a missing, expired, corrupt or invalid one, Windows may just be unable to read it, hence resulting into this error.

More elaborately, 0x800b0109 is most often associated with:

Windows Update Errors: This error may be seen during the process of updating Windows when an update can’t be installed because the digital signature of the update can’t be verified by Windows.

Windows Store Problems: this error can happen during the process of installing applications from the Microsoft Store.
Installing Drivers: this error occurs mostly when drivers of various hardwares are being installed especially for those that come with a certificate that is a must be installed for it to work.

0x800b0109 Error Common Reasons

There are several reasons why you might encounter the 0x800b0109 error on your system. The most widespread reasons include the following:

Missing or Outdated Certificates: this is the most prevalent reason which is missing or expired certificates, which are utilized by Windows for checking updates and software.

Corrupted Operating System Files: Edited or incomplete operating system files can prevent the successful installation of updates or applications and lead to the error 0x800b0109.

Interference from Antivirus or Firewall: In certain instances, external protective applications (e.g. antivirus software or firewalls) may restrict access to Windows Update servers which in turn causes the error.

Outdated Date and Time Settings: The incorrect date and time settings on the user’s computer lead to the loss of validity of certificates which results in this error.

Issues Related to Windows Update: There may be issues with Windows Update services or components that causes these updates not to be downloaded or installed on the system.

How to Repair 0x800b0109 Error

Having identified the possible cause of the problem, let us now proceed to implement techniques to fix the 0x800b0109 error.

1. Perform Windows Update Diagnostic Troubleshooting

The first action that you should take is the inbuilt Windows Update Troubleshooter, an effective tool to identify and repair many problems experienced with Windows Update, including those associated with certificates.

Minimize Window and Press Windows I Keys.

Update & Security > Troubleshoot > click on the Troubleshoot button.
Click on Extra troubleshooters (if required).

Locate Windows Update and click on Run the troubleshooter.
Read the instructions carefully and let the troubleshooting process complete without interference.
After the process is over, reboot the device and see whether the problem persists.

2. Check and Sync Your Date and Time Settings

Setting an incorrect date or time to the system could interfere with the validation of certificates since most of them have a specific period of validity. Thus, in order to set the correct date and time:

Moving the cursor to the extreme lower right side of the task bar, right click on the time.

Click on Adjust date/time.
Make sure the Set the time automatically option is On.
Make sure your time zone is the correct one.
If the date and time shown are wrong, either change them manually or let Windows adjust them through the internet time.

3. Install Outstanding Windows Updates

If your system has updates whose installation was pending because of the 0x800b0109 error, simply try installing the updates manually. The procedure is very easy:

Again, open Settings and then navigate to Update & Security > Windows Update.
Select the Check for updates button.
If the update is available, click on Download and install.
If Windows Update fails again, continue with the following troubleshooting steps.

4. Reset & Fix Windows Update Components

Incorrect or faulty Windows Update components may lead to problems such as 0x800b0109. You can reset Windows Update components using the Command Prompt.

Open Command Prompt as Administrator:

In the Start Menu search bar, type in “cmd” and then right-click on the Command Prompt option and select the Run as Administrator option.

First stop the Windows Update services by typing these commands one after the other and hitting the enter key after each:
net stop wuauserv
net stop bits
net stop cryptsvc
Rename the SoftwareDistribution and Catroot2 folders which contain update information:
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
Then restart the services:
net start wuauserv
net start bits
net start cryptsvc
After that, close the Command Prompt and attempt to restart the Windows Update process once more.

5. Update or Install Certificates Manually

Often the problem strays from the domain of expired certificates or their unavailability. You are advised to install or update certificates in the following manner:

Simultaneously click on Windows + R keys to bring the Run command, type mmc in the empty box then press Enter.
On the Microsoft Management Console screen, click on File > Add/Remove Snap-in.
Highlight Certificates and click Add Certificate.
Select Computer account and click Next > Finish.

Then go to Trusted Root Certification Authorities to see if there are certificates that are missing or have expired.
Additionally, see if Windows wants to install a certificate update by visiting the Microsoft Update Catalog.
If you see a specific certificate that is missing or expired, try installing or updating it manually.

In Conclusion

If you’ve got trouble following these methods, then we advocate you pick out Technical Support from us that will help you better. I am certain they may come up with pleasant answers to clear up this Windows Update Error completely. You also can go to our website for greater information.

Scroll to Top