I'll stick with WIN7. Recently, Comcast announced that their email servers were no longer going to support TLS1 and 1.2, both of which are supported by WIN7. Starting March 31, only TLS1.2 will be supported by Comcast. That left us with five options:
1 - upgrade to WIN10 and Office2016 = $$ for one-time purchases to own

2 - buy a whole new computer running WIN11 and Office 365 - both are annual subscription services (aka "Microsoft income streams") = non-starter

3 - edit the WIN7 registry to enable TLS1.2, which is included with but not activated in WIN7 = 5 minutes and $40 of technician time

4 - Keep WIN7 but abandon Outlook2010 and just log into the Comcast server every time we want to check email (using our computer); iphones worked OK as is.
5. Keep WIN7 but get a new email program that supports TLS1.2 = new learning curve for us old folks.

We took option 3.
