Possible easy solution to Failed to Authenticate using QAuth (1) .401: UNAUTHORIZED

I was getting a Failed to Authenticate using QAuth (1) .401: UNAUTHORIZED" Error. After investigating, I found that my computer hadn't adjusted for DST. Once I updated that, the error message went away.

Thanks! This is already buried in lots of topics and I've just made it part of the Frequently Asked Questions. Hopefully, this makes it easier to find: