I've tried to install Visual C# 2010 Express edition onto my PC, but whenever I try to run it, I get a "Invalid license data. Reinstall is required." error message. I've already tried reinstalling it, and the message persists.
OS is Vista Home Premium. I already have VC# 2008 Express installed.
It appears that this has been reported as a bug, but has been closed as "Not Reproducible". One suggestiong from the Microsoft supporter is to redownload and reinstall:
Please try downloading the complete ISO from http://www.microsoft.com/express/Downloads/#2010-All, mount it as virtual drive. Then execute Visual C# setup from the ISO media and select an option to remove the product. Once the Visual C# has been uninstalled, please try installing it again from the ISO media.
It sounds a bit far fetched to me, but you might want to give it a try.
If that does not help you, I would suggest that you either post a new bug report to Microsoft or vote to reopen the existing one (I am not sure if/how this is possible).
I have the same problem with Windows 7 Pro. 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.
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.
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?).
Edit: Following further investigation I have concluded that the advice given by Microsoft is useless and does not attempt to diagnose the problem. It simply assumes a corrupt installation source. I believe that the problem is in fact corrupt permissions/ownership of registry keys. HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Licenses and subkeys needs to be owned by SYSTEM with admins having full access. On my affected system the owner cannot be displayed and no permissions are shown when viewed by admin.
I don't have the definitive fix for this so far, as I cannot adequately edit the permissions for the affected registry keys.
Re-installing Windows is an almost certain fix, but also an extremely drastic one.
Dears,
I have faced this problem when installing the Visual studio 2010 - C# express using the local administrator account, then trying to register the application using another account that doesn't have Admin privileges, due to corporate polices this account can’t edit in the Registry by any means, so suddenly that’s how I figured out how to solve this issue I open VS 2010 as a local administrator then entered the registration key, and it is worked , I don’t understand how do that Microsoft itself didn’t mention this solution or even try hard to investigate or solve this issue