Send/Recieve Mail, error: 17997

Hi,

On a work computer here I have multiple accounts setup on my Outlook. However none of them are able to retrieve or send mail out. I know that the servers are up and running due to being able to send/receive emails on my phone, tablet, and outlook online.; and I have also looked into all of the accounts and all the server information required is correctly entered.

When looking at the error message, 17997, online most people are suggestion things like running updates (which there are non available), or rebuilding my identity database.

Now I am hesitant in doing this, as I have many different accounts and folders within the inbox. Does anyone have suggestions on how to safely do this and insure all of those folders will return upon rebuilding the identity? Or have other suggestions for fixing this problem?

I have also thought about possibly just removing the account and re-adding it to Outlook, however I feel as if those folders would once again not appear. Another idea is just re-installing the program, and adding the accounts, but again would those folders appear?

Any help would be greatly appreciated,

Thanks,

Taylor