A DLL file, also known as Dynamic Link Library, is a file containing different functions which are mostly used across multiple applications. In order to unregister a dll file to troubleshoot a problem in Windows XP or Vista, follow these instructions:
1. OPEN COMMAND PROMPT:
- From START menu select RUN option.
- Type “cmd” (without the quotation marks) . This calls up the Windows Command Prompt.
- Click OK. (Where is RUN in Windows Vista?)
2. NAVIGATE TO THE EXACT LOCATION OF DLL:
- Type “regsvr32 /u filename.dll” where “filename” is the name of the DLL that you are trying to unregister.
- Press ENTER.
- After you press ENTER,Â the confirmation window stating “DllUnregisterServer in (file name) succeeded” will be displayed.
Please keep in mind that this involves system modification and can be highly risky.
It’s always recommended to keep a system backup handy, in case things go wrong.
Here is an example how to unregister a file smbdlib.dll:
Video 1. How to Unregister a dll File?