Windows 10: Outlook not syncing anymore to existing Yahoo account since MS Office 2021 plus...

I now receive errors in Outlook 2021 that is mapped to my Yahoo account. Under outlook on my Windows 10 PC I no longer can get or send emails. I have no problems with yahoo mail wien I am in yahoo mail via the web directly. I noticed there was a MS Office 2021 plus 16/0/16626/20170 program update done the same date that the issue occured. I have tried everything I could changed PW, checked the sync folder and deleted 4 items that would not sync, but those were also happening prior to this full sync issue, but still have the isssue. I did start outlook in safe mode, and it did work a few

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Unable to add yahoo accounts to Outlook app

I am trying to sync three yahoo accounts to my Outlook app on a PC and receive Error Code 0x801901f7 . I am also unable to add them to the app on my phone. I have logged into my Yahoo account through a browser, turned on Two step verification, and added
a manage app password for Outlook Android but am still unable to sync. Any suggestions?

Moved from: Outlook.com / Email / Adding email accounts

 

Outlook Exchange, Gmail account in Outlook, sync contacts possible?

I have Office 365, Outlook on Exchange and within Outlook I also have have 2 Gmail accounts (IMAP).
Currently I am using a 3rd party tool to sync contacts (exporting to and importing from vCards) so as to sync contacts and have them available on smartphone devices.

The vCards method works well, requiring a number of steps though.

It is a (very)long shot, I know, but given the Outlook and Gmail accounts are within the same application, is there no way to automatically sync those details?

Thanks.