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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20 Responses to “Error “Remote Desktop Web Connection ActiveX Control Could Not Be Installed” After Installing Windows XP SP3” Subscribe to comments!

  1. alexandre
    said this on Tuesday, February 10th 2009 1:31 am

    Fantastico, parabens, obrigado !!!

  2. Richard
    said this on Tuesday, January 27th 2009 7:04 am

    Fantastic! so easy and so fast! Saved us a tech call out :)

  3. Sarcha
    said this on Tuesday, January 27th 2009 6:36 am

    Thank you Ben Blackmore, removing {9059f30f-4eb1-4bd2-9fdc-36f43a218f4a} after removing {7584c670-2274-4efb-b00b-d6aaba6d3850} made all the difference. I can use VPN again!

  4. Sam Gibson
    said this on Saturday, December 27th 2008 4:20 am

    Thank You!! I encountered this problem with a new Acer AspireOne (xp home sp3 preloaded) with our existing SBS 2003 RWW. I spent nearly two days researching before I found this article. Deleting the registry key as you recommended fixed my problem immediately. I still had to fidgit a bit with the “trusted sites” security settings in IE7 to get the server to offer me the ActiveX control download. I had to change a couple more security settings to turn off prompting before the “unsigned” control is allowed to run without a pop-up box warning me that the website wants to start a remote session.

  5. Ben Blackmore
    said this on Friday, November 28th 2008 3:02 am

    I also had to delete the extension GUID {9059f30f-4eb1-4bd2-9fdc-36f43a218f4a}, which is the TS Web Extension, to get it to work.

  6. Richard
    said this on Saturday, November 22nd 2008 6:42 pm

    Can you use the remote access service on a mac?

  7. Richard
    said this on Friday, October 31st 2008 7:14 am

    Have XP SP3 and SBS 2003. Deleting the registry key worked for me. Thank you for your help. I would think many more people will have the same problem within the next few months. This fix is a keeper.

  8. OneUnderTheSun
    said this on Wednesday, October 29th 2008 2:29 am

    This worked for me…Thanks a bunch!

  9. Paul Horsey
    said this on Monday, October 13th 2008 9:04 pm

    Do you have a fix if using https website and RDP?

  10. Rick Allen
    said this on Thursday, September 11th 2008 3:14 am

    Thank you for the great fix!

    It worked like a charm

    Rick

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