Is regsvr32.exe a virus?
The . As a class, . OCX files contain ActiveX controls, which are code blocks that Microsoft developed to enable applications to perform specific functions, such as displaying a calendar. “The Uptycs Threat Research team has observed more than 500+ malware samples using Regsvr32.exe to register [malicious] .
How do I register a DLL with regsvr32?

Register 32 or 64-bit DLLs in Windows
- Step 1: First click on Start, then Run.
- Step 2: Now all you have to do to register a DLL file is to type in the regsvr32 command, followed by the path of the DLL file.
- Step 3: Now click OK and you should get a confirmation message that the DLL has been registered successfully.
How do I fix regsvr32 DLL error?
Common solutions for Regsvr32 errors
- Open an elevated command prompt.
- If the 32-bit DLL is in the %systemroot%\System32 folder, move it to the %systemroot%\SysWoW64 folder.
- Run the following command: %systemroot%\SysWoW64\regsvr32
How do I register unregister DLL with regsvr32 utility?
Click Start > All Programs > Accessories and right-click on “Command Prompt” and select “Run as Administrator” OR in the Search box, type CMD and when cmd.exe appears in your results, right-click on cmd.exe and select “Run as administrator” At the command prompt, enter: REGSVR32 “PATH TO THE DLL FILE”

How do I remove regsvr32?
Answer:
- Click Start > Run (or use the Windows command line: Search > CMD > Right click – Run as Administrator)
- Type REGSVR32 /U “C:\Blackbaud\DLL\[filename.dll]” For example, to unregister SQLDMO.dll type, REGSVR32 /U “C:\Program Files\Microsoft SQL Server\80\Tools\Binn\SQLDMO.dll”
- Click OK.
What is regsvr32.exe file?
In computing, regsvr32 (Register Server) is a command-line utility in Microsoft Windows and ReactOS for registering and unregistering DLLs and ActiveX controls in the operating system Registry.
How do I register unregistered DLL?
How to manually unregister a DLL file
- Click Start > Run (or use the Windows command line: Search > CMD > Right click – Run as Administrator)
- Type REGSVR32 /U “C:\Blackbaud\DLL\[filename.dll]” For example, to unregister SQLDMO.dll type, REGSVR32 /U “C:\Program Files\Microsoft SQL Server\80\Tools\Binn\SQLDMO.dll”
- Click OK.
How do I register a DLL?
How to Register DLL Files on Windows?
- Press Win+R to open Run.
- Type the reg DLL command: regsvr32 “[the path of the DLL file]”. The following is an example:
- Click OK to execute the reg DLL command.
- You will receive a confirmation message once the DLL file has been successfully registered.
Why do DLL files need to be registered?
By registering a DLL, you are adding information to a central directory (the Registry) for use by Windows. The information typically includes a “friendly name” for the component, which makes it easier to use from within another program, and the full path to the . dll or .
Do I need to register DLL?
Short answer is that you don’t need to register DLLs in order to use them. The only exception to this is COM and ActiveX DLLs which need to add certain keys to the registry. For a normal DLL (including . NET class libraries), all you need to know is the path to the DLL.
How do I check if a DLL is registered?
If you have one machine where it is already registered, you can:
- Open regedit and search for your DLL filename.
- If it is registered, you will find filename under a key that is under the TypeLib. The key will look like: {9F3DBFEE-FD77-4774-868B-65F75E7DB7C2}
Does a DLL need to be registered?
dll is in a directory or folder that is in the PATH. Otherwise, the full path for the DLL must be used. A DLL file can also be unregistered by using the switch “/u” as shown below. This can be used to toggle a service on and off.
How do I register a missing DLL file?
What happens when a DLL is registered?
Why are DLLs registered?
How do I de register a DLL?
How to register or deregister DLL, OCX and EXE files
- To register DLL or OCX files use the command regsvr32.
- To deregister DLL or OCX files use the command regsvr32 with the /u switch.
- To register EXE files type the full path and filename and append /regserver.