FYI, I could not connect to either of my GMail accounts this morning using OAUTH2 due to reported invalid authentication credentials. My app password connection still worked. Revalidation of GMail OAUTH2 was required to fix the OAUTH2 issue. This has been a recurring issue for me (third time since creating OAUTH2 authentication).

Had the same issue Sunday morning. Checked and the last time it occured was last November on the morning of the time change as well. All three email accounts on 6 computers had to be revalidated. I did 3 on Sunday and the other 3 (at my vacation home) tonight.

Wonder if it is a Gmail issue or a Pmail issue with the time change.

Interesting thought. I think the frequency it has occurred for me is as often as the time has changed. How did you identify that it last occurred at the November time change?

Posted it in here last year on Nov 5th. Since I have to revalidate 18 times, it really sticks out in my memory when I have to make changes.

You may be onto something. I found a related post by me on Nov 5th as well. I haven't found any posts that correspond to the March 10th time change though. I am going to do more searching here and then search the PM-Win support list archives for any other invalid credential reports that correspond with a time change.

You may be onto something. I found a related post by me on Nov 5th as well.

Yup - no issue in March when we moved the clocks forward, but two years in a row when we moved them back. Guess we will find out next November for sure.