This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Prior to this update, I had no issue with Outlook for Mac and Yahoo. I just updated to 16.73 (23051401). After updating, I had many problems with the Yahoo mail from within Outlook. It worked for the first 15 minutes, then got login errors and IMAP errors. I deleted the Yahoo account from Outlook and then quit. I then went back to Yahoo and got a new app password. I restarted Outlook and added the new app password obtained from Yahoo. It worked for the first 15 minutes then started to suddenly empty out all emails in all folders. Then the emails would eventually re-sync and reload from Yahoo. This now happens constantly. I tried the same uninstall reinstall process again, and nothing changed. Now also changes I make within Yahoo via my browser are not reflected in Outlook and changes made to Yahoo mail within Outlook are not saved when the emails clear, res-sync and reload, and they are not reflected in Yahoo online either. It's stuck in a loop. New emails DO ARRIVE and get added to the loop. Also there is a constant attempt to recreate the basic Yahoo folders: Drafts, Archive, Junk, Bulk. I get error messages saying can't be installed because they already exist - which they do! Why is it trying to reinstall them as if it is a new connection with Yahoo?
My setup is the following using OUTLOOK for MAC - BUT NOT NEW OUTLOOK. New Outlook does not support all the folders I have created over the years for organization and am unwilling to lose. I have a 16 inch MBPro M1 Max chip. Running Monterey 12.6.5.
AS a side note, I have for the past year or more had problems where white-listing emails does not work. Outlook is putting emails of people I email with regularly into SPAM. I whitelisted many of them, but Outlook is ignoring the classification and still putting those emails into SPAM.
Using older versions of Outlook for Mac in business environments
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Diane,
I was able to dissuade NEW OUTLOOK from opening by not choosing TRY NOW until today. Opened Outlook to find NEW OUTLOOK INSTALLED. NO Gmail account iboxes, no calendar events, no contacts. . . . nothing.
I am just a consumer Diane, I don't know what it means to open Terminal . . .
I have not experienced that yet but can confirm that New Outlook also has serious deficiencies which I regularly report when I switch between New Outlook and Legacy - a transion I don't seem to have problems with, thank goodness. I still have the same issues using the beta release 16.76 (23070301) I don't know what they are fixing in all the releases they are making but it's certainly not the Yaoo IMAP problem or any of all the problems I experience in New Outlook. Microsoft is killing this product and making me think about getting out of MS 365. Currennty I am using the Yahoo browser app to get by as the Apple mail app does not have the filing to folders capabilities of Outlook or even the Yahoo browser.
This should block the new outlook, hopefully even for updates - close Outlook, open Terminal and paste then run this line:
defaults write com.microsoft.Outlook EnableNewOutlook -Integer 1
Possible values
0 = Switch hidden
1 = Switch displayed, default off
2 = Switch displayed, default on (default)
3 = New Outlook enabled with switch hidden
Set preferences for Outlook for Mac - Deploy Office | Microsoft Learn
NOTE TO ALL CURRENTLY USING LEGACY: I have been using Mac Mail for my Yahoo address. . . Opened Outlook today to find this msg in a highlighted ribbon at the top of home page:
THE NEW OUTLOOK FOR MAC IS HERE ! THE NEW VERSON WILL LAUNCH THE NEXT TIME OUTLOOK RESTARTS. And then an option to TRY NOW.
There is no way I can see to prevent this. Last time it occurred without my permission, all folders were emptied and a Microsoft tech told me to revert back to Legacy. . . . REALLY?
It appears nothing has changed.
Jana
Yes I also use Yahoo with IMAP. I just updated Outlook to Version 16.76 (23062703). Same problem. I deleted my Yahoo account and reinstalled it with fingers crossed. But no, same old problem. I have changed to New Outlook again and the move files is working again. That does seem to come and go. Sometimes it works and sometimes not. It could be that all folders have not been synced. Which seems to point to some kind of sync problem similar to legacy but manifesting differently i.e. sync is ok on the built in folders - Inbox, Sent etc but not in user created folder. Who knows? Apparently not even MS seeing that they have made at least 3 version updates now and still not resolved the issue. Grrr....