Changed my gmail password and between the multiple devices, some didn’t have the password change in time and the gmail account seems locked out. Instead of retrieving emails, it kept returning saying the server was not accepting the credentials and returning error:800cccd1.
Tried changing gmail account password, disabling/enabling imap, etc, nothing worked.
It turns out that after some specific type of failures, Google “locks” your account. To unlock yourself, try login to Google with the Captcha check to confirm you’re human and you know what you’re doing. It worked for me.
Here is the link to Google Captcha check.
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