When you start the Remote Desktop Web Connection window after installing Windows XP Service Pack 3, the following error may occur, and the Connect button remains grayed out:

Remote Desktop Web Connection ActiveX control could not be installed. A connection cannot be made without a working installed version of the control. Please contact the server administrator.

Microsoft RDP ActiveX Control is disabled when you install Windows XP Service Pack 3 or Windows Small Business Server 2003 SP1. Follow one of the following methods to enable the ActiveX control.

Method 1

Use the Manage Add-ons dialog in Internet Explorer to enable the Terminal Services ActiveX Control. For more information, refer to article You cannot connect to a remote computer when you use Terminal Services Web Access or Remote Web Workspace on a Windows XP SP3-based computer

If the ActiveX control is not listed in Manage Add-ons dialog, follow Method 2 below.

Method 2

1. Click Start, Run. Type Regedit.exe and press ENTER

2. Navigate to the following branch:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Ext \ Settings

3. Double-click Settings to expand the branch

4. Right-click {7584c670-2274-4efb-b00b-d6aaba6d3850} and choose Delete

5. Click Yes when asked for confirmation.

Close all instances of Internet Explorer and re-run Remote Desktop Web Connection.

Registry Fix

To automate the above, download tsweb-enable.zip and save to Desktop. Extract the contents and run the file tsweb-enable.reg file. To reverse the changes, run tsweb-disable.reg.

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27 Comments

  1. Imran
    said this on Monday, October 19th 2009 8:49 pm

    I deleted the both registry keys from HKCU and added the site to my Trusted sites list and still receiving the same prompt. Is there anything else I can try?

  2. Eric
    said this on Wednesday, September 30th 2009 11:37 pm

    I delete the file from the registry but i still can’t install the active x add on. I’m running XP SP3 and IE 7.

    Thanks

  3. Jose Lopez
    said this on Wednesday, September 9th 2009 12:52 am

    Thanks a bunch !

  4. Doug
    said this on Thursday, August 13th 2009 7:55 am

    What if this key wasn’t present and your still experiencing the issue.

  5. Paulo
    said this on Wednesday, August 5th 2009 6:05 pm

    Tanks a lot!!!

    You saved my life!!!!

  6. RS
    said this on Friday, July 3rd 2009 10:18 am

    Ramesh, thank you. And PLEASE do everyone a favor and get hired by Microsoft. They must really, really need you.

  7. Steve
    said this on Tuesday, May 19th 2009 1:25 pm

    Well done-works fine.

  8. Lotta
    said this on Friday, March 13th 2009 3:34 pm

    Thank You! It worked at onece, great

  9. Miguel
    said this on Wednesday, March 11th 2009 9:21 pm

    Thank you, this works perfectly after 2 days of research and testing…

  10. david
    said this on Sunday, March 1st 2009 9:02 pm

    brilliant works 100%

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