NET 4, VS2010 install fails on XP SP3 machine “Fatal error during installation”
Posted in .NET, Misc on April 12th, 2011 by taswar
So I had this issue at work had to install on xp machine, dont ask why but just had to 
Thus I was stuck installing vs2010, I went and downloaded .net 4 standalone
And was having the same issues.
And went through the logs and found the error message was due a registry key (aren’t they always)
Product: Microsoft .NET Framework 4 Client Profile — Error 1402. Could not open key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Security\ServiceModel 4.0.0.0. System error 5. Verify that you have sufficient access to that key, or contact your support personnel.
So I went to regedit, went to that key and added Administrators rights to it and run the installer again and everything was fine and installed vs2010 and .net 4 finally…………….
Anywayz just in case anyone runs into this issue again, this was the solution.
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March 14th, 2012 at 10:40 pm
Thanks, this was the only solution I found that actually worked!