Starting on November 12, 2026, Microsoft suffered a global outage. Outlook was the main app and service affected, but other Microsoft functions went down as well.
As of this writing, there is little other info on the matter. Microsoft has mentioned only that this appears to not be related to a cyberattack. This may have all been caused by an update. So please, do not panic. There is no need to change passwords or worry about your security.
If you are affected, there is little for you to do, other than to wait and watch your Outlook app, for when it begins to work again. Please also feel free to monitor the situation with the links, below.
Microsoft Service Health Status page
Microsoft 365 Status over at Twitter/X
Thousand Eyes’ Internet Outage Map
As of the morning of November 14, 2026, Microsoft declared this problem resolved. If you are still having any problems with your Outlook or other Microsoft apps, restart your computer or device to see if it clears up. And please reach out to me if you need help with any persistent issues.