-Un-plug your ethernet cable or disable your network adapter. (This step is temporary and will eventually be reset to normal.)
-From the Start menu click on My Documents ( 'Documents' for Vista.)
-Click on 'My games' and then click to open the Company of Heroes folder.
-Click to open the folder named 'Cache.'
-Select all files within by right clicking, and then click to delete.
-Now launch the game with the game disc in your disc drive.
-Once you have launched the game and created a save file, quit out to your Windows desktop.
-Plug-in your ethernet cable or enable your network adapter.
Note: The game disc will be required to play from this point forward. If you launch the game with out the game disc, you will be prompted to register once more.