CorFlags.exe

CorFlags.exe allows to set or clear the following bits/flags from the CorFlags section of the header of a portable executable image:

• 32BITREQUIRED
• 32BITPREFERRED
• ILONLY

Additionally, it allows to change the CLR header version from 2.0 to 2.5 or vice versa.

CorFlags.exe is installed with Visual Studio and located under %WindowsSDK_ExecutablePath_x86%.