Windows Updates fail with error code: 80070308.

Hi,

Do you remember making any recent software or hardware changes on the computer?

This issue may occur if the Windows Update components got corrupted.

Let’s try the following steps and check.

Method 1:

You may try to run the Windows Update troubleshooter and check.

Open the Windows Update troubleshooter

Method 2:

You may refer to the article and try running the Fixit and check.

If the issue persists after running the Fixit, then try the manual steps to reset the Windows Update components and check:

How do I reset Windows Update components?

Important: The above mentioned link also contains steps to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

For more information, you may refer to the article:

How to back up and restore the registry in Windows

Method 3:

You may also try installing the failed updates one at a time in clean boot state and check.

Note: After you have finished the troubleshooting, refer to the section “How to reset the computer to start as usual after clean boot troubleshooting” to boot the system in normal start up.

Hope the information helps. Let us know if you need further assistance with Windows related issues. We will be happy to help.