What is Microsoft Register Server

Hi , I recently installed a program named "CopyTrans Manager" and it is safe. I open it and then I get a UAC prompt saying a program named Microsoft Register Server wants to make changes. I click no then it automatically pops back another message. It keeps doing that so I press yes. Nothing happens and I go on with my day. I scan with Malwarebytes and came up with nothing. Is MRS a virus? I'm really scared right now. 
Answer
Answer

Microsoft Register Server is the command used to register DLLs (Dynamic Link Libraries) in Windows.

The command is regsvr32 with the full path being C:\Windows\System32\regsvr32.exe

Click 'More details' in the UAC prompt and if the path is the same you may approve it.

The Microsoft Register Server or regsvr32.exe is a legitimate process but can be used to register malicious DLLs so only allow it for trusted software (like you know that CopyTrans Manager is safe).

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Last updated April 23, 2025 Views 40,223 Applies to: