Mail - Google account: "failed to verify server certificate"

[Tks]

Good day to all,

I get this message to provide a password for my Google account, but when I proceed I get the message in attachment.
I had this problem in the past (2 years ago) but can't remember how it started, nor how it was solved, but I remember it took months, and that I use d Thunderbird in the meantime.
This time, it happened after a reinstall of High Sierra on my imac 27 mid 2010.

Any idea about what's happening is most welcome.

 

[Lufbrarunner]

1) Clear your browser cache: First try clearing the cache (browsing data) of the browser you are using.

2) If #1 does not work, check your date and time: Certificate authentication requires your Mac’s time be in sync with the server you are connecting to. Open System Preferences on your Mac and go to "Date & Time". Ensure the option to "Set date and time automatically" is checked (click the lock to make changes). Make sure to select the timezone location you are.

 

[Tks]

1) Clear your browser cache: First try clearing the cache (browsing data) of the browser you are using.

2) If #1 does not work, check your date and time: Certificate authentication requires your Mac’s time be in sync with the server you are connecting to. Open System Preferences on your Mac and go to "Date & Time". Ensure the option to "Set date and time automatically" is checked (click the lock to make changes). Make sure to select the timezone location you are.

I'm sorry I think I forgot to mention I was using the Mail app. I have no issues receiving mail in browser or iphone for that matter.