Hi, I have been using windows 7 enterprise edition for last 6 months with out any problem and when i installed SP1 beta yesterday,it became evalaution copy. I tried reentering MAK key but no luck. Anyone has any workaround? Thanks.

This is absolutely normal. The SP1 Beta makes you current installation an evaluation copy which will expire, but I don't remember the expiration date. If you uninstall SP1 Beta the Evaluation Copy will be removed with it.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

This is absolutely normal. The SP1 Beta makes your current installation an evaluation copy which will expire, but I don't remember the expiration date. If you uninstall SP1 Beta the Evaluation Copy will be removed with it. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”