I am using TB 60.0 from PortableApps under Win 10. I have configured a gmail account 4 months ago, and it worked fine.
Now after 4 months I open TB, and I have a connection failure, as a notification in the systray
and a popup with
In an Ubuntu box, I could use TB 52 to read emails from that account with no problem, without needing any further configuration of the gmail account. The "failed" popup window seems to be what in Ubuntu prompted me to enter my gmail password.
How can I solve this?
Is that related to any certificate that I should get and import?
I found very scarce information, which did not help.
Something perhaps related: I am using a corporate PC, and a short while ago, I had issues with Firefox.