There are a few like Rootreg, Register/Unregister OCX/DLL Utility, Reg Dll View, etc, will let you do the same easily.Emsa Register DLL Tool, unfortunately, is not free anymore.
If you find that some of your Windows functions are note working properly, you may need to register your If you wish, you can also use a third-party freeware to do so easily.
Thankfully there's a simple trick to get things rolling again.
Hold down the Windows key and hit 'r' to bring up the Run command box.
Type 'regsvr32 jscript', then 'regsvr32 vbscript', and finally 'regsvr32 /i mshtml', making sure to select 'OK' each time. Another common problem is due to updates not installing properly.
There's no definitive answer here, although the most likely reason is that existing files or settings are blocking updates.