How do I get Windows Defender running again

[imcanadian]

I am back here again after a few days absence. I decided to try again with Windows Defender and look at message #6 that Compton wrote. I type regsvr32 in CMD with Adminstrator And here are below what I did and found five are missing or corrupted for Windows Defender.

regsvr32 wuaeung.dll -- missing
regsvr32 wucltui.dll -- missing
regsvr32 softpub.dll -- good
regsvr32 wintrust.dll -- good
regsvr32initpki.dll -- missing
regsvr32 wups.dll - good
regsvr32 wuweb.dll -- missing
regsvr32 atl.dll -- missing
regsvr32 mssip32.dll -- good

So yo see the five dll files are missing. I have heard that never download the dll files from online on the Internet. But I would like to know how to get these dll files replaced. Any ideas abot this.

Thank you
John