When I try to change the identity of any application pool, received the following error message:
Application Pools
---------------------------
There was an error while performing this operation.
Details:
Keyset does not exist (Exception from HRESULT: 0x80090016)
Reason :
There is not enough permissions to open file
- %ALLUSERSPROFILE%\Microsoft\Crypto\RSA\MachineKeys\ 6de9cb26d2b98c01ec4e9e8b34824aa2_*
- %ALLUSERSPROFILE%\Microsoft\Crypto\RSA\MachineKeys\ 76944fb33636aeddb9590521c2e8815a_*
Resolution
- Go to '%ALLUSERSPROFILE%\Microsoft\Crypto\RSA\MachineKeys'
- Find files with name starts as 6de9cb26d2b98c01ec4e9e8b34824aa2_ and 76944fb33636aeddb9590521c2e8815a_.
- Check permission for this file. Default permissions are:
- System, Administrators,TrustedInstaller - Full permissions
- IIS_IUSR,WMSVC - Read permissions
- LOCAL SERVICE - Read permission
If the issue still persists:
Take backup of MachineKeys (%ALLUSERSPROFILE%\Microsoft\Crypto\RSA\MachineKeys)
Give full permissions to your account to access the MachineKeys folder.
Please check that files have name 6de9cb26d2b98c01ec4e9e8b34824aa2_GUID and 76944fb33636aeddb9590521c2e8815a_GUID .
If not, just copy existing files started with name 6de9cb26d2b98c01ec4e9e8b34824aa2_ and 76944fb33636aeddb9590521c2e8815a_ and then set GUID part in the file name equals to GUID obtained from MachineGuid registry key from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryprography\
