Managing Dynamic-Link Libraries
As an administrator, you might be asked to install or uninstall dynamic-link libraries (DLLs), particularly if you work with IT (information technology) development teams. The utility you use to work with DLLs is Regsvr32. This utility is run at the command line.
After you start a command window, you install or register a DLL by typing regsvr32 name.dll. For example:
If necessary, you can uninstall or unregister a DLL by typing regsvr32 /u name.dll. For example:
regsvr32 /u mylibs.dll
Windows File Protection prevents replacement of protected system files. You’ll be able to replace only DLLs installed by the Windows Server 2008 operating system as part of a hotfix, service pack update, Windows update, ...