Windows 7 - Windows Update failing - Error code 80071A91

I have a Windows 7 Home Premium 64-Bit installation where Windows Update has stopped working for no apparent reason.

6 new important updates are listed as available. No matter whether I try to install all of them or just a subset, it always goes like so:

1. Updates are being downloaded.


2. One update after the other is reported as being installed. ("Update x of n is being installed ...")


3. After the last update has been "installed", the Windows Update icon turns red and it is stated that none of the updates were installed. (I.e. if I tried to install 6 updates, it says "6 updates failed to install.". An error code of 80071A91 is reported.

When googling for this error code, I found advice to delete files in %windir%\system32\config\txr and %windir%\system32\SMI\Store\Machine. Unfortunately, this didn't help.

What can I do? Any log file I can check?

Answer

How-to reset the File System Resource Manager if you receive error 0x80071A91

1. Click Start click All Programs click Accessories, right-click Command Prompt, and select Run as administrator.



2. In the Command Prompt window you will need to type the following: fsutil resource setautoreset true C:\ and press ENTER




3. Note: You will need to replace the C:\ with the drive letter that Windows 7 is installed on.



4. Restart your computer, and then attempt to install the failed update(s).

As always you can try the Microsoft FixIt Tool.