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My WSUS installation is now using 100 Gb of disk.

Is there a way to reduce this usage? How can I, say, delete updates included in Service Packs?

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2 Answers 2

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You can go to Options > Server Cleanup Wizard, in the WSUS window, and clean up unused updates and update revisions, computers not contacting the server, uneeded update files, expired updates, and superseded updates. I do this approx. once a week, sometimes a little less frequently.

WSUS Server Cleanup Wizard

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  • This dialog never finishes. I let it run for several days and the cleaning never came to end.
    – motobói
    Dec 17, 2014 at 11:13
  • Great walk-through... Saved me about 70% of wasted space by WSUS. WSUS should handle the superseded files automatically, this is a huge miss by Microsoft again... This company is getting consistently worse each year: product evolution, quality, support, design, cloud obsessed... Thank you for taking the time to share this article.
    – James
    Apr 17, 2020 at 19:45
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I have found another quite effective approach.

Go All Updates folder, and set:

  • Approved on Approval field
  • Any on status field

Then right click on column titles and check Supersencence. A new column 2 will appear. Use it to sort all your approved items.

Select all superseded items (they are grouped by 2 different icons), and decline them.

Then go in Options->Server cleanup wizard and set only Unneeded update files

Run it.

NOTE: This 'brutal' approach saved a choking server by reducing the disk usage (about 50%).

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