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Because the primary reason behind the error is wrong credentials, you should check the username and password of your account. After verifying the information, input the credentials accurately in the fields and try to connect the account again. If there is no other issue with Outlook, there will be no problem in sending or receiving emails.
The server settings for the different email servers are different for SMTP, IMAP, POP, etc. So, you can check for the settings of incoming and outgoing email servers again.
For example,


IMAP settings for Gmail are:
Incoming email server – imap.gmail.com
Outgoing mail server – smtp.gmail.com
Incoming mail server port – 993 (SSL required)
Outgoing mail server port – 587 (SSL/TLS required)
POP settings for Gmail are:

Incoming email server – pop.gmail.com
Outgoing mail server – smtp.gmail.com
Incoming mail server port – 995 (SSL required)
Outgoing mail server port – 587 (SSL/TLS required)
Third, if you have large sized PST File, in which the file size exceeded that which is imposed, you might subject yourself to Error 0x800ccc92. Which of course hinders the send/ receive of your Outlook emails. In this case, the safest thing to do is to clean your Outlook Mailboxes. Also, you could make use of the following methods – Archive, Compact, Split, etc. You can use the AutoArchive feature as:
In the Advanced category of Outlook options, click the AutoArchive Settings.

Make all the settings that are required for effective archiving.

Another way of eradicating 0x800ccc92 is by cleaning off the Deleted Items folder. For this, in the Advanced category, click the checkbox to Empty Deleted Items folders when exiting Outlook.

You can also use the in-built repair tool, Scanpst.exe to fix this error.
The manual methods to remove the errors have limited capabilities to handle the issue and so they may worsen the situation. So, you should go for the automated method to recover the data.


Regards,
J Wick