Windows Error 2502 and 2503

After reading hundreds of posts about this, it's a pretty simple fix, that I figured out myself.

Grant full permissions to c:\windows\temp . Yes, it's that easy.


You may have to use the UAC localtoken registry entry and reboot:

C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f

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Error 2502
Error 2503
msi installer error 2502
msi installer error 2503