Issue: Often when you try to register a DLL on Win7 or windows server 2008, you run into an error
"The module scmt.dll was loaded but the call to DllRegisterServer failed with the error code 0x80040201"
Why: UAC (user account control) limits the ability to register the DLL. so you have to run the command on elevated command prompt using Admin role.
Fix: Run the command in an elevated mode
1. Click on Start button > type Command Prompt > (right click command prompt and click run as Administrator)
2. Deregister the DLL using the following command
cmd> "regsvr32 /u scmt.dll"
3. Reregister the DLL using the command
cmd > "regsvr32 scmt.dll"
you will get the below dialog box.