How do I fix Outlook is suddenly not sending or receiving emails?

My Outlook account is not downloading or sending messages. I am able to login and I have used the sync button. Anyone else had this happen and know how to resolve it? I've used the Microsoft help and it was not helpful at all!

I cannot receive or send emails in my Hotmail/Outlook account since 1/28. Have been trying to contact support for help. Still waiting to see what is the issue. If someone tries to send me an email, it says there is a problem with recipients mailbox.

I have also tried the recommended fixes, but no luck. Any recommendations on what to try or is this a known problem that is being worked on? Any update?

With the help for an hour and half on Microsoft Chat, it is fixed. The problem was I installed Microsoft 365 and allowed all the defaults. As a result, I ended up with a new beta version of Outlook. The Microsoft support person moved me to the old version of Outlook and was able to get Outlook working again. My Outlook is set up with IMAP and uses Spectrum with an e,mail of name.statecode.rr.com. In the days I spent getting this resolved I noticed others with this configuration but saw no resolutions. I hope this brief problem resolution will get to others and help them solve their problem.

By the way, if anyone has Windows 11 and uses an old version of PhotoShop, DO NOT attempt to load the old PhotoShop on Windows 11. If you do, the only resolution I found was to have the Geek Squad resolve the problem for me by deleting and reloading Windows 11. Not fun!

(Partial copy of response to Patricia Daniel in this thread)

I did check with Best Buy's Geeksquad (where I bought my laptop) and they mentioned that anyone with a IMAP type email account used by Roadrunner on Spectrum (uses .rr in the email address) is no longer compatible with Outlook. The change was recent and the Geeksquad tech noted that they have had a number of recent cases of Outlook users with Roadrunner email accounts reporting receiving and sending email problems. The solution was to switch to using Spectrum Webmail (which isn't as good) but I can get emails on my laptop again.

I am having the same problem. I can send and receive on my phone but not my laptop. I have New Outlook on my laptop, and Mail on my phone. Has anyone resolved this issue?