Outlook Tightens Security: Microsoft to Block .library-ms & .search-ms Email Attachments Starting July 2 min read Microsoft Security Outlook Tightens Security: Microsoft to Block .library-ms & .search-ms Email Attachments Starting July Do Son June 12, 2025 Beginning in July 2025, Microsoft will automatically block email attachments with the extensions .library-ms and .search-ms in... Read More Read more about Outlook Tightens Security: Microsoft to Block .library-ms & .search-ms Email Attachments Starting July
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