How to unregister a dll file in Windows XP or Vista?

Unregister DLL’s in Windows XP or Vista

Sometimes we need to unregister a dll file to troubleshoot a problem in Windows XP or Vista. Here’s how to do it:

 XP And Vista

1. From Start –> Run, type “cmd” then click on Open. (Where is RUN in Windows Vista? - Please See Below)
   
2. Type “regsvr32 /u filename.dll” where “filename” is the name of the file that you like to unregister.
   

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.

Where is Run in Vista

Windows Vista does not have RUN in Start Menu by default, but you can easily access it by pressing “Windows” + “R” keys simultaneously.

You can also customize the Start Menu by:

1. Right-click on the taskbar, then select “Properties“.
2. Click on “Start Menu” tab, then click on “Customize“.
3. Check “Run command“.