TS Web Access not working - ActiveX not installed or enabled
I have set up a W2K8 RC1 server with IIS-TS-TSWeb access installed and configured. Remote app configured and tested as well. All works fine directly on the server itself but is not working for any client connections. I get an Active X error when accessing the TSwebaccess page telling me the actyive x is not installed or enabled. Heres what I tried so far:
1. Upgraded windows xp machine to SP3, which is supposed to contain the updated RDC client, which it does. Tswebaccess still gives the active x Error
2. Used another Windows XP machine and changed the error link to go to the microsoft site and download and install KB925876. Still does not work.
3. Installed the Desktop Experince Role - did not correct
Can someone help me? It does not good in our eval if no clients can connect. Im just trying to test out the published applications part of 2K8 RC1.
Answers
The TS ActiveX control (needed by TSWA) is disabled by default in XPSP3 as a security measure. You need to explicitly enable the Terminal Services activeX control in IE in order to use the activeX control (and hence TSWA).
Click on Manage Add-Ons in IE to enable the TS ActiveX control.
Are you using IE6 OR IE 7 to access TSWA?
If you are unable to see/enable the Terminal Services ACtiveX control in IE7 on XPSP3 (we are investigating this known issue) as a workaround can you try deleting the following registry keys:
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{7390f3d8-0439-4c05-91e3-cf5cb290c3d0}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{4eb89ff4-7f78-4a0f-8b8d-2bf02e94e4b2}
Once you delete these keys, the activeX control should be enabled in IE7.
All Replies
The TS ActiveX control (needed by TSWA) is disabled by default in XPSP3 as a security measure. You need to explicitly enable the Terminal Services activeX control in IE in order to use the activeX control (and hence TSWA).
Click on Manage Add-Ons in IE to enable the TS ActiveX control.
Are you using IE6 OR IE 7 to access TSWA?
If you are unable to see/enable the Terminal Services ACtiveX control in IE7 on XPSP3 (we are investigating this known issue) as a workaround can you try deleting the following registry keys:
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{7390f3d8-0439-4c05-91e3-cf5cb290c3d0}
HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{4eb89ff4-7f78-4a0f-8b8d-2bf02e94e4b2}
Once you delete these keys, the activeX control should be enabled in IE7.
This is a great fix, thank you. for my clients that did not have the add-on listed this works. i can also push out a .reg key to remove these through sms to automate the procedure.
i have on question, for clients that do have the add-on listed but disabled. is there a way to enable it in a command line or other automated way besides asking the user to enable it? Thank you for your help.
- sorry, but i figured this one out just recently. apparently deleting these 2 keys works on a system whether they can see the add-ons in manage add-ons or not. Also, if you disable the add-on again in manage add-ons after deleting these 2 keys, windows adds these keys back. Thanks for your help, this is very helpful.
- Thank you very much, I almost had to dye my hair over this one. Removing the key fixed it instantly as it didn't show the TS active x option. Are you aware if there an easier way to enable this add on without having to change the registry? Like a command line or a script that can be ran? This is a very nice feature but in an enterprise environment I wouldn't trust my users in the registry given they don't even have access and help desk has plenty to deal with.
- Hi Jay R. Pielemeier,
You have to register this dll "mstscax.dll" if the active x didn't show
%windir%\system32\regsvr32 mstscax.dll - Thanks, I will try that. I don't know what it is but I noticed that XP installs act different even if the configuration is the same. In some cases when I reimage the mashine I have trouble with it is working fine and then in other cases it won't at all or I have to apply the registry fix as listed above. I also noticed that it will function perfectly with any Vista or 7 installs without any tweaking. I also have an automation for the registry changes that can be deployed on clients to make things easier which I will post when I try to register the mstscax.dll that would sum up all available resolutions.
