The next day, I was able to set the clock back to the correct date and continue using the product.īased on other answers to this question, it would appear there are numerous reasons that you could receive this message. In my case, the resolution was quite simple - set the clock back ahead to the wrong date. Start VS2010, you will receive the vague message indicating "Invalid license data.Set your system clock back to the correct date.Set your system clock ahead by 1 day (oops!).I can provide clear and concise steps to reproduce: I have had this EXACT problem with VS2010 Professional Trial / Evaluation download.
Re-installing Windows is an almost certain fix, but also an extremely drastic one. I don't have the definitive fix for this so far, as I cannot adequately edit the permissions for the affected registry keys.
On my affected system the owner cannot be displayed and no permissions are shown when viewed by admin. HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Licenses and subkeys needs to be owned by SYSTEM with admins having full access. I believe that the problem is in fact corrupt permissions/ownership of registry keys. It simply assumes a corrupt installation source. Since this is virtually a virgin Win7 install, the only conclusion is that MS have broken their licesing checks again (why check for a license on a free product?).Įdit: Following further investigation I have concluded that the advice given by Microsoft is useless and does not attempt to diagnose the problem. To say it's frustrating is an understatement and the disinterest from Microsoft in fixing what appears to be a common problem (you can find lots of search engine 'hits' for the problem, none for a solution) is quite unbelievable. Have tried everything suggested by the Microsoft people, including uninstalling, cleaning up, reinstalling both from the web installer and the VS2010 Express iso - with the same result every time. I have the same problem with Windows 7 Pro.
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