The Outlook Freeze: New Windows 11 Update Breaks POP3 Accounts in Outlook Classic
ID: 246c0235-3ebf-558b-8f35-349b2de10cea
STIX ID: report--246c0235-3ebf-558b-8f35-349b2de10cea
Feed Name: securityonline.info
A recent Windows 11 (24H2/25H2) update, KB5074109, is causing Outlook Classic to freeze or show a persistent white screen when POP/SMTP accounts are configured (IMAP unaffected). Users experience lingering Outlook processes and relaunch errors, risking data loss if composing during freezes; Microsoft has acknowledged the issue but not provided a fix, with the current workaround being to uninstall the update and temporarily pause system updates.
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