Good day all.
I thought Bleeping Computer might be a good place for this. I happened to have a look in my laptop's recycle bin (on D drive) the other day and found this:
The SIDs with the X's are my laptop's current SID's, everything else I have no idea where it comes from. Even with my laptop's SIDs, I do not have -1004 and -1005 users. The laptop has always been in a Workgroup, not a domain, and no one has connected to its shares with any of those SIDs (e.g. my other computers do not have those SIDs), I do not recall re-installing Windows 7 from scratch (if I did, I did it only once, ever, but I think I used an image of my early system partition, I don't think I started from scratch). So where do all these SIDs come from? C:\ drive is fine, but D:\ drive is a mystery.