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SOLVED: Updates from the WSUS server Result In Error 800B0001, Since Latest Windows Update Agent Installed

Jul 2012 Posted by in Windows Server | 30 comments


Every machine I install the lastest Windows Update Agent on results in a 800B0001 error when getting updates “FROM YOUR SYSTEM ADMINISTRATOR” but have no problems when getting “UPDATES FROM MICROSOFT UPDATE”.

This is the same as:

All of the machines in question are Win 7 64Bit Enterprise and are of varying makes and models (ie. Toshiba R700 laptops, whitebox PC’s…). Machines without the recent Windows Update Agent, work just fine with either my WSUS server or MS Update.

I have run KB949104’s FixIt tool and it does find errors, says it repaired them but the problem still exists and if I run the FixIt tool again, it finds the same errors.


This is apparently a known issue Microsoft has a hot fix for.  Below is the process I followed based on what the kbase and Microsoft partner support told me:

All of these instructions are to be performed on the WSUS Server.

  1. Download and run Update for Windows Server Update Services 3.0 SP2 for x64-based Systems (KB2720211)
  2. After the hotfix is complete, Stop your WWW Service
  3. Stop you UPDATE SERVICES Service
  4. Perform an IISRESET (which seemed redundant to me, but it does start the WWW service)
  5. Start your UPDATE SERVICES

Even though the hotfix did not say it requires a reboot, MS support was quite clear that it did require a reboot.  However, I did not reboot my WSUS server and all is well now 🙂


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  1. Aziz12-15-16

    Hi my friend,

    Thanks alot for your post , it helped me well !!!

    you’re great !

  2. Baroody07-16-15

    Many thanks Ian, it took me a lot of time to find this fix…

  3. Baroody07-16-15

    Many thanks, it took me a lot of time to find this fix.

  4. Honza02-08-15

    Thx, solved for me.

  5. Ken11-15-14

    I’d been battling this problem all week. Your fix worked like a charm.

  6. Jeroen10-30-14

    Finally fixed this issue, thanks!

  7. Hilo10-22-14

    Thank you very much! 🙂 It helped me alot

  8. roberu09-16-14

    it’s solve my probleme.

  9. Mike11-08-13

    Great, worked for me too!

    • Fisayo12-20-13

      This is Great! After so many months of searching MS site. Great Job Dude!

  10. Steve10-17-13

    Thanks dude. I completely had a moment of stupidity on this one. Your post has really helped me pull my head out of …

  11. Hubert Trzewik09-19-13

    Worked for me. Thanks a lot! WSUS errors are always a headache. I’ve lost several hours fighting with 800B0001 at client site.. and uncle Google gives a lot of different but unrelated solutions for 800B0001. Thanks a lot, once again.

  12. Chris06-27-13

    Perfect! You made my day 🙂

  13. Nir04-17-13

    Great ! Solved it !!

    Thank you

  14. Tarc12-07-12

    Wouldn’t simply doing a reboot eliminate the need for stopping the listed services?

  15. yaro11-13-12

    Right after installing the patch I had a prompt to restart the server so looks like it varies

  16. A happy customer10-11-12

    I tried this and it did work for me. I did not have to reboot following the installation of the KB patch.

  17. joshh10-04-12

    Thats great so what about 32 bit windows 7 o.s ?

    • Ian Matthews
      Ian Matthews10-14-12

      I don’t understand the question. Can you ask it with more detail?

  18. JSF09-14-12

    Hey Marty, read properly the KB and what is written here… The KB2720211 is for the WSUS SERVER. It is an update for the Windows SERVER Updates Services

  19. Auke09-07-12

    I installed the KB270211 on our WSUS server, but it didn’t resolve this issue. It seems that KB2734608 does resolve the issue:

    • Ian Matthews
      Ian Matthews09-16-12

      Thanks for the addition 🙂

    • Craig04-10-13

      Thanks KB2734608 resolved it for me.

    • Bernhard09-10-14

      Thanks Auke

      Thanks KB2734608 resolved it for me

  20. Caleb09-06-12


    Are you trying to run the update on the clients or the server? The article and the KB both indicate that the install must be run on the WSUS server itself, and it sounds like you may be trying to install it directly on the clients receiving the error. The WSUS server is possibly owned, operated, and managed by another individual in your company on whichever team controls the way updates are distributed within your enterprise. I hope this helps in some way!

    • Marty10-04-12

      You were correct. I was be hasty and didn’t read everything that I needed to.

  21. Marty09-03-12

    I’ve had this same error on several of my computers and I’ve tried to install this update on each of my computers but the KB2720211 update fails to install each and every time.

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