fdcors-proxy.com shows up in UTQ

I occasionally see fdcors-proxy.com show up in the UTQ, it lists it as an anonymizer and when I lookup the URL it shows it is Microsoft.  This only comes up once and awhile as in 2 maybe 4 times a week, with 1 or 2 users out of 50.  It appears the users are somewhat random as well and I do not see anything malicious on their logs or computers other than this fdcors-proxy.com aspect.

 

Has anyone else seen this or have any clues that could help here?

 

 

Thanks.