Unable to register a .dll file using Regsr32.exe command-line tool

Unable to register a .dll file using Regsr32.exe command-line tool

I think you are mistaken for thinking that that message is an error even if it says “succeeded”. The “DllRegisterServer” mentioned in the message is one of the two functions being called by regsvr32 when either registering or unregistering a DLL file. Here, since you are registering a DLL file, the function called is the “DllRegisterServer”.

And if you will be unregistering a DLL file in your computer, regsvr32 will call “DllUnregisterServer”. When you use or run regsvr32, all it does is to call those functions and nothing else. If you think the message you received is an error and the DLL registration failed, here is an example of a failed DLL registration. See image.

You will notice that the message in the dialog box in my sample image is very different with yours. Since I’m not sure if the message you received is really a failed registration, I used “wmi.dll” on my computer to try to reproduce a failed DLL registration as an experiment. The experiment was successful and I was able to reproduce the supposed failed registration.