Microsoft’s increasingly active and supportive presence in the Open Source community gets its own website, too. Check it out at opensource.microsoft.com. Good stuff abounding there!
After using DISM Add-Package to install a Cumulative Update from a CAB file, I find the update is not shown in Settings/Update & Security/Show update history. It does show up in Programs and Features/View installed updates, though.
The news Windows File Recovery tool is available in the Microsoft Store. It can recover deleted files and attempt to make sense of corrupted ones. It does a good enough job to be worth downloading, installing and learning.