I have just upgraded to Windows 10. The whole operation seemed to go very smoothly. I did not run into any problems until I started setting up my email account. I have had a Yahoo account through AT&T for years. Well I found out that trying to set it up using the Yahoo button would not work, so I used the advanced settings and set it up manually. At first this appeared to work just fine. I got to all my emails. I am able to both sent and receive. Then I realized that my folders were missing. I worked with every setting that I could find but no good. I have no TRASH folder, no SPAM folder, and none of the folders that I have created. I did find that if I went to Yahoo through EDGE and navigated to my account, everything was there. The problem only exists when I use the MAIL button to access my account. I contacted AT&T Technical Support. I went through one technician and one supervisor. The best that they could come up with was that Windows 10 and Yahoo are not compatible. I was just trying to find out if anyone else has run into this issue and if there is a solution or is it truly a compatibility issue.