If you want to purge the downloaded patches on WSUS Server to cleanup / delete unneeded content, then you have to use the following tools;
- WSUSDebug PurgeUnneededFiles
- WSUSUTIL.exe Deleteunneededrevisions
- WSUSUTIL.exe Reset
- WSUSUTIL.exe Removeinactiveapprovals (optional)
WSUS Debug Tool: This command deletes all files not needed on the WSUS server.
***(NOTE: You have to decline the updates first.)
WSUSUTIL.exe deleteunneededrevisions: Purges the metadata for unnecessary update revisions from the database. This is useful for managing WSUS with an MSDE database.
***(NOTE: this command should only be run after stopping the Windows Server Update Services website in Internet Information Services MMC.)
WSUSUTIL.exe Reset: Now that you have purged the content, use ‘WSUSUTIL.exe reset’ which checks that every metadata row in the database has corresponding content stored in the file system. If content is a missing or corrupted, WSUS downloads the content again.
***(NOTE: WSUSUTIL.exe is installed C:\Program Files\Update Services\Tools)
The option “Download update files to this server only when updates are approved” must be checked / selected or else, it will re-download those “not needed” updates,during the next sychronization schedule.
Open WSUSAdmin Console – Click on Options – Click on Synchronization Options – Scroll down to Update Files and Languages Section – Click on Advanced – Click OK – Select “Download update files to this server only when updates are approved” – Click OK and save settings.