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Tag Archives: Exchange Online
Exchange Online: Auto-Archiving Rollout in October 2025 – delayed
[German]Auto-archiving for Exchange Online will be introduced worldwide for all public clouds in October 2025 and for all government clouds in November. Once archiving is enabled for Exchange Online users, the oldest items will be automatically moved from a user's … Continue reading
Microsoft 365: Outage blocks Teams and Exchange Online (Oct. 8, 2025)
[German]Yesterday noon / evening (Central European Time), October 8, 2025, there was a disruption to Microsoft 365 services. This resulted in users experiencing problems accessing Microsoft Teams and Exchange Online features. As the disruption occurred late in the evening, users … Continue reading
Microsoft confirms Outlook 365 bug that can only be fixed by support
[German]Microsoft has confirmed in a support article that there is a bug in Outlook 365 that can cause crashes when starting up. If I understand correctly, intervention by Microsoft Exchange Online Support is required to fix this bug. And there … Continue reading
Anti-spam service blocks links in Exchange Online and Teams
[German]Since Friday, September 5, 2025, users of Exchange Online and Microsoft Teams have noticed that links can no longer be opened. The cause is Microsoft's anti-spam service, which blocks these links for individual users and even moves emails into quarantine. … Continue reading
Replacing Exchange with cloud-managed remote mailboxes in EO
[German]Microsoft unveiled its "Cloud-Managed Remote Mailboxes" on August 20, 2025. This is an attempt to free companies that have moved all their mailboxes to Exchange Online in the cloud from the Microsoft Exchange servers they still operate on-premises. These Exchange … Continue reading
Exchange Online: 12-hour sync issue (EX1137017) is being investigated
[German]Microsoft is investigating an issue with Exchange Online that causes emails to not sync with Outlook for 12 hours. This affects users of mobile devices where the Outlook client uses Hybrid Modern Authentication (HMA). Email access issues may then occur … Continue reading
Reduced license count for the Exchange Online Delicensing Resiliency feature
[German]Microsoft has slightly adjusted its criteria for delicensing resiliency for Exchange Online tenants. Now Exchange Online tenants with fewer than 10,000 licenses can also benefit from this function. This helps administrators who remove licenses in a tenant to prevent the … Continue reading
Exchange Online: Can't change Tenant setting (since mid-May 2025)
[German]I'm posting an observation here in the blog that a reader pointed out to me – a second reader also seems to be affected. Administrators of Exchange Online tenants have noticed since around May 14, 2025 that they can no … Continue reading
Exchange Online: False SPAM flagging bug with GMail fixed
[German]A small addendum from the beginning of May 2025 regarding Exchange Online. Since April 25, 2025, there has been a problem with a machine learning model incorrectly marking emails from Gmail accounts in Exchange Online as spam. According to Microsoft, … Continue reading
Exchange Online: "Send as" authorization on shared mailbox disrupted (April 10, 2025)
[German]Microsoft is not having a good run at the moment – yesterday (April 9, 2025) the Exchange Admin Center was down worldwide for a few hours. Microsoft then rolled out a fix and everything seemed fine again. Today, I'm receiving … Continue reading