My Winodws 7 Pro x64 keeps trying to install updates and every time it says that the update failed. It already restared twice automatically at night, and I also tried to install them manually once. It's running on a ThinkPad T400. Here is the log: enter image description here

The error code is 80071A90

The question is whether others are experiencing this too and if there is a solution. Updates usually work fine for me.


According to the informations from Microsoft error 80071A90 is caused by locked files.

There is a fix-it tool that may correct this problem:



This has just worked for me:

  1. Download and install update "Windows6.1-KB2647753-v2-x64" manually from http://www.microsoft.com/en-us/download/details.aspx?id=29156

  2. Do a normal Windows update for the remaining files.

Source: http://www.sevenforums.com/windows-updates-activation/247035-windows-update-error-code-80071a90.html

  • Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Der Hochstapler Aug 18 '12 at 0:32

I had a problem where I had 6 updates recommended. I tried updating a number of times without success. I then tried doing one update at a time. I had to restart 6 times, but it worked.

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