I did have a testing key by MS, and have activated it successfully the day I install.Yet, it did surpise me when the popup appeared asking me to activate my product... And, the key I have failed to activate my product.What should be the problem?

Did you get any error codes when activation fails?Microsoft MVP - Group Policy

Hi, Try to run the following command to activate Windows 7: Slui /4 If any problem is encountered, please let us know. Thanks.

From where did u got the activation key?If u activate windows on 3 different systems with same activation key, That key becomes inactive.My suggestion for this is, register once again at microsoft site and get a new activation key..

I'm having problems trying to activate too. I've tried to run this command but I received the same err message"The Data is Invalid"What data??

I installed Windows 7 only in 1 machine.Actualy I lost the key I take note when I download the instalation files, but I followed Microsoft instructions, I went back to the download page, logged with my passport account and got the License key again.

i found this answer for u...Error code 08007000D Unable to Open the License. "The Data is Invalid."This error code indicates that the initial download may have been corrupted, and you may have to download the package again. For further details Go to http://support.microsoft.com/default.aspx/kb/930378/It's for Vista but it's still helpful..

You must remove Daemon tool or Alcohol CD/DVD Emulation programms.

Holy Joe said: You must remove Daemon tool or Alcohol CD/DVD Emulation programms.Are you sure this is the problem? I'm only asking as I have the same dilemma the OP is dealing with. A friend told me the key is supposed to be good until Aug, but mine keeps asking for activation. I have virtual drive pro installed. this woud be the reason why I can't reactivate?Thanks for the input

Sarnath said: I have virtual drive pro installed. this woud be the reason why I can't reactivate?Thanks for the inputWhen i'm installed W7 on my comp, iimmediatelyactivated it successfully.In fewdaysi installed Daemon tools and used it about 2 weeks without problem. Then appeared ballon tip "Could not activated" with error 0x8007000D. Theni'mtrying activateby3 differntofficial keys from MS and became thesame errors.When i'm removed Daemon tools(without reboot after it) and click on Activate button and all ok - appears caption"Windows is activated". I'm think that problem is because W7 has an enchanced protect technology againsthardware emulation cracks (Vista was cracked withvendor's BIOS emulation files).