Clear the Update Failure Information

There is a lot of update failure information listed in Windows Update history, how can I delete it?

The Windows Update history is a log that records previous attempts of installation. If an update fails to install, an entry will be added. Even if the update has been installed successfully later, either by installing a later compiled pack that includes the failed update or by Automatic Update in the background, those logged items remain.
Therefore, the history is not related to the current system status. To check whether Windows is up-to-date, we can have a check with Windows Update.

Also, please understand the information of Windows Update history is in a file and if you would like to delete it, all the update history, not just the installation failures will be removed.

To clear the Windows Update history, please follow the steps below:

1. Open command prompt:

    1) Click Start, and then type cmd in the Start Search box.
    2) In the search results list, right-click Command Prompt, and then click Run as Administrator.
    3) When you are prompted by User Account Control, click Continue.

2. At the command prompt, type "net stop WuAuServ" (without quotations) and press Enter.
3. Click Start, type "%windir%" (without quotations) in the Start Search box and press Enter.
4. In the opened folder, look for the folder named "SoftwareDistribution" and open it.
5. Double click the DataStore folder and locate the DataStore.edb file. Right-click on the file, select "Rename" and type "DataStoreold" (without quotations) to rename this file.
6. Open command prompt, type in the command "net start WuAuServ" (without quotations) and press Enter to restart the Automatic Updates service.
Then check if the updates failure history is cleared.