I do have Windows Live Mail 2012 installed, but I would advise anyone, including you, that's attempting to use it with Gmail to switch to another, supported, email client that handles modern security protocols.
I cannot even get Windows Live Mail 2012 to behave consistently with a Gmail account when the Google setting to allow less secure apps is turned on. If it's off, it fails entirely.
I've helped a lot of people get Windows Live Mail up and running even after it went out of support. I won't be doing that going forward because it does appear to be getting flaky, which I knew would eventually happen. I'm telling everyone to wash their hands of it, as matters will only continue to get worse with the passing of time.
Brian - Windows 10 Pro, 64-Bit, Version 2004, Build 19041
The purpose of education is not to validate ignorance but to overcome it.