There are workarounds, though.

Microsoft reported issues with sending and receiving email messages through Outlook, searching in OneDrive and creating chats ...

Windows 11 Patch Tuesday updates for 24H2 and 25H2 reportedly break classic Outlook, causing freezes, hangs, and lost email ...

Microsoft shared a temporary workaround for customers experiencing Outlook freezes after installing this month's Windows ...

Microsoft releases an emergency Windows 11 update to fix Outlook crashes caused by the January 2026 security update. Restore ...

Microsoft admits that “Classic Outlook profiles with POP accounts and PSTs hang after Windows updates on January 13, 2026.” If you’re affected, you need to await a fix. “The Windows Team will be ...

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...

First of all, we should restart the Outlook app installed on your system and if that doesn’t work, reboot the system. You should also restart your router or modem. These things might not seem like a ...