Forum Discussion
Outlook Classic not Opening
My system is Windows 11 and Office 2021 (not MS 365) on a Dell laptop.
My Outlook Classic is via an Ionos exchange server
My problem started over a week ago with a message “Your mailbox has been temporarily moved on MS Exchange server” when trying to open Outlook (Classic – not MS 365).
Ionos advised that the problem “Your mailbox has been temporarily moved on MS Exchange server” was MS trying to default to looking at MS 365, so their fix was to change the registry settings to stop Outlook looking for MS 365. This worked fine the first day, but when restarting the laptop next day got the error message "Cannot start MS Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The attempt to log on to MS Exchange has failed".
I can still use my emails on my iPhone and also online via https://exchange.ionos.eu
Any solutions?
2 Replies
hi Keith, this is an old school error that I used to see more often but I haven't seen it so much lately. The old fix was to create a new Outlook profile and now it might include deleting the old profiles but I don't prefer to do that. The configuration is confused in the settings. I don't offer reg fixes anymore but a new profile should help. I'm also guessing as IONOS is using a hosted Exchange server, you might want to contact them to ask them how they have fixed these in the past.
- Allen
Community Manager
Keith100 ,
Welcome to the Microsoft Tech Community Lounge, this is a space to discuss the Microsoft Tech Community itself. Your question appears to be about outlook and how it works. I will move your post to the outlook discussion board for you, however please be aware that the Microsoft Tech Community is not an Support Community and your question maybe better addressed by contacting Microsoft Support (https://support.microsoft.com)
Allen
