Important update does not install, error code 642

unknown error encountered
 

Question Info


Last updated March 24, 2019 Views 11,689 Applies to:
Answer
Answer

Hi AndyBelarus,

 

·        What is the operating system installed on your computer?

·        Are there multiple updates that are failing?

 

Check to see if the following helps.

 

Step 1: Check the update history to know the exact error code. Refer to the below mentioned link to check this. Double click on the update which says “Failed”.

See which Windows updates are installed - Windows 7

See which Windows updates are installed - Windows Vista

 

Step 2:  Run the Automated Troubleshooter to check for the issue.

 

Windows 7:

Run Windows Update troubleshooter and check if it helps.

Open the Windows Update troubleshooter

 

Windows Vista:

Try to reset the Windows Update Components and see if it helps. Refer the below mentioned article for the same.

How do I reset Windows Update components?

 

You may also want to check:

Troubleshoot problems with installing updates - Windows 7

Troubleshoot problems with installing updates - Vista

 

Hope this helps!

 

Syed N – Microsoft Support
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