I screwed up today. While meaning to delete files from AppData\Local\Temp, I accidentally deleted (many) from AppData. [Sidebar: Is there any way to configure the file explorer such that deleting from the folder view is disabled?]
After a brief panic, I downloaded (from another machine) the utility Recuva64 (thank you!) and restored the missing files to a separate drive, after which I copied them back to where they belong.
But, there was a problem - I could not copy files from the recovered folder Credentials to Local\AppData\Credentials. Even stranger, I did not have permission to view the security credentials of Local\AppData\Credentials. I tried booting to safe mode to fix this, but both folders were gone - the recovered one as well as Local\AppData\Credentials.
So, my system is up and running, but the folder Local\AppData\Credentials is missing. I tried using Recuva64 again, but it did not find the folder. I also looked in an older backup of my profile, but again, I did not see the folder. The folder does, whoever, exist on my notebook (but whose to say if the information is consistent).
Things seem to be working, but I am worried - it seems that I deleted something important and that this will come back to haunt me, and in the worst way. How bad is this really? Is there anything I can do to mitigate possible problems?