System drive almost full due to cab_xxx files in Windows\Temp directory

Symptoms:

Deleting the cab_xxx files in the temp directory only results in regeneration every 30min.
In the <windows>\Logs\CBS folder there are lots of (large) .log files.

Solution:

Delete the oldest .log files in the <windows>\Logs\CBS folder. It’s no problem if you want to delete them all.
After this, in the <windows>\temp folder, delete every cab_xxx file.

Explanation:

Windows seems to have a problem with compressing one or more of the .log files, using makecab.exe.
The makecab program is used to compress CBS log files. When windows scans for updates when booting, it often finds the CBS log files and tries to compress them.
Downloading files to your computer can olsa trigger makecab.exe.

Source: https://answers.microsoft.com/en-us/windows/forum/windows_7-files/cabxxxx-files-found-in-windowstemp-folder/2e86137e-7e6b-4cb7-9a3c-4ee73f665742?auth=1

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