The Regsvr32 tool is a command-line utility that can be used for registering and un-registering OLE controls like DLL and ActiveX (OCX) controls in the Windows operating system. If you find that some of your Windows 10/8/7 functions are note working properly, you may need to register your dll files. This tutorial will tell you how to register or unregister a DLL file using the built-in Regsvr.exe or some freeware Register DLL Tools.
Register dll file
To register a dll or ocx file, open a command prompt as an administrator, type the following and hit Enter:
regsvr32 "path & filename of dll or ocx"
Re-register all dll files
To register ALL dll files, open a command prompt as an administrator, type the following and hit Enter:
for %1 in (*.dll) do regsvr32 /s %1
Unregister dll file
To un-register a dll or ocx file, open a command prompt as an administrator, type the following and hit Enter:
regsvr32 /u "path & filename of dll or ocx"
This will register or unregister the dll file.
Register DLL Freeware
If you wish, you can also use a third-party freeware to do so easily. There are a few like Rootreg, Register/Unregister OCX/DLL Utility, RegDllView, etc, will let you do the same easily. Emsa Register DLL Tool, unfortunately, is not free anymore.
Post ported from WVC, updated & posted here.
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Looking to learn more about other files, processes or file types or file formats in Windows? Check these links:
Windows.edb files | Thumbs.db files | NFO and DIZ files | Index.dat file | Swapfile.sys, Hiberfil.sys & Pagefile.sys | Nvxdsync.exe | Svchost.exe | RuntimeBroker.exe | TrustedInstaller.exe | Desktop.ini file | ShellExperienceHost.exe.