Some people may experience problems playing streaming content with DRM installed. Fixing the problem is usually very simple. The most common issues are corrupted and outdated software. Both are very common and easy to fix.

Corrupted or incorrect version of Windows Media Player - This should be a Version: 10.00.00.4036 or 11.0.5721.5145. To find which version you have, please open Windows Media Player and on the Menu bar go to "HELP" > "About Windows Media Player"
If it is not as above please download and reinstall the latest version here.

There is also a "Update for DRM-enabled Media Players" patch that may be required here

If your software is corrupted or not working correctly with Digital Rights Management, this will usually fix the problem

Corrupted or incorrect version of I.E. For Users of XP or XP SP1.
This should be at Version: 6.0..2800.1106 with Update Versions; SP1.
To find which version you have, please open Internet Explorer and on the Menu bar go to "HELP" > "About Internet Explorer".
If it is not as above please download and reinstall the latest version here.

For Users of XP SP2,
This should be at Version: 7.0.5730.11. If it is not as above please download and reinstall the latest version here
please note there are some critical patches to be installed:
Compatibility Patch for Internet Explorer for Windows XP Service Pack 2 (KB917425) can be found here

And Cumulative Update for Internet Explorer for Windows XP Service Pack 2 (KB912812) can be found here

Make sure I.E. is set to allow the user of Active X Controls. Go to:
Internet Explorer > Tools (menu item) > Internet Options (menu item)
> Security (tab) > Custom Level (button) and ensure that:

* Download signed ActiveX controls
* Run ActiveX controls and Plug-ins
* Script ActiveX controls marked for safe scripting
- are either set to "Enable" or "Prompt".
If your software is corrupted or not working correctly with Digital Rights Management, this will usually fix the problem

When activating your audio and video files so that you can play them, you may receive the following:

Specified license is not valid
License can not be found
The above errors are received when there is a communication error between the computer the audio/video file resides on and our DRM servers. This is a temporary problem which generally resides on the network of your ISP. If you wait 10 - 15 minutes, their network will clear up and you will be able to activate your license.

Please have a look at these points also to check through -

Firewall Settings - Turn off your firewall (standard on Windows XP with SP2) or configure it for the website on which your streaming media resides.
name.premiumtv.co.uk
ptvreg.co.uk

Pop up Blockers - Disable all pop up blockers on your computer. This is a very common problem.