Error reason
Digital rights management (DRM) system damage, because unstable network, it appears network transmission error lead to license bad, not normal to play when download authentication. You can choose following solutions to operate. DRM (Data Rights Management related: drm removal), generally translation for digital Rights protection or digital property Management or digital Rights Management, it is a good safety technology for the copyright protection of video use.

Method One
Step 1: open "my computer"--the "tools" menu bar window-folder options-check-senior Settings-cancel "hidden protected operating system files" option, and select the "hidden files and folders--show that all files and folders" and then click on the "application" at last "certain".
Step 2: open the disk C, open to "Documents and Settings" named folder-All user-delete "DRM" naming folder(drm related: free drm remover).
Step 3: open the "my computer"--the "tools" menu bar window-folder options-view--click below "reduction for the default setting", and then click on the "application" at last "ok".
Step 4: to test, check whether the solution, if the above operation was not solved, please select method two to operate.

Method Two
Unload existing players, then download Player Windows Media Player to install. Suggest using Windows Media Player10 version player.

Uninstall Windows Media Player procedure is as follows: my computer-control panel-add or remove programs-add/remove Windows components-will Windows Media Player before the check box in the catalog cancelled-click on the "next"--click "finish".