outlook web access

Outlook Web Access (OWA) is the browser-based email client for Microsoft Exchange Server. On WindowsForum.com, discussions focus on Exchange OWA security, particularly CVE-2026-42897, a vulnerability affecting on-premises Exchange Server 2016, 2019, and Subscription Edition. Administrators must verify that emergency mitigation M2 has been applied via the Exchange Emergency Mitigation Service or the Exchange On-premises Mitigation Tool, rather than relying solely on patch dashboards. The tag covers practical steps for confirming OWA mitigations and understanding the unique fix path for this Exchange advisory.