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


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 🙂



  1. Avatar
    roberu September 16, 2014 at 2:14 am

    it’s solve my probleme.

  2. Avatar
    Mike November 8, 2013 at 2:56 pm

    Great, worked for me too!

    • Avatar
      Fisayo December 20, 2013 at 1:35 pm

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

  3. Avatar
    Steve October 17, 2013 at 1:28 pm

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

  4. Avatar
    Hubert Trzewik September 19, 2013 at 7:15 am

    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.

  5. Avatar
    Chris June 27, 2013 at 1:30 am

    Perfect! You made my day 🙂

  6. Avatar
    Nir April 17, 2013 at 12:30 pm

    Great ! Solved it !!

    Thank you

  7. Avatar
    Tarc December 7, 2012 at 2:18 pm

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

    • Ian Matthews
      Ian Matthews December 10, 2012 at 11:17 pm

      Certainly a reboot would restart all of the services.

  8. Avatar
    yaro November 13, 2012 at 2:50 pm

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

  9. Avatar
    A happy customer October 11, 2012 at 2:21 pm

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

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    joshh October 4, 2012 at 4:52 am

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

    • Ian Matthews
      Ian Matthews October 14, 2012 at 9:45 am

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

  11. Avatar
    JSF September 14, 2012 at 1:22 pm

    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

  12. Avatar
    Auke September 7, 2012 at 12:30 am

    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 Matthews September 16, 2012 at 8:48 am

      Thanks for the addition 🙂

    • Avatar
      Craig April 10, 2013 at 12:46 pm

      Thanks KB2734608 resolved it for me.

    • Avatar
      Bernhard September 10, 2014 at 3:46 am

      Thanks Auke

      Thanks KB2734608 resolved it for me

  13. Avatar
    Caleb September 6, 2012 at 4:42 pm


    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!

    • Avatar
      Marty October 4, 2012 at 1:47 pm

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

  14. Avatar
    Marty September 3, 2012 at 7:17 am

    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.

Questions or Comments?