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Outlook encrypted email errors affecting cross-tenant communications

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1 unique sources, 1 articles

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Microsoft is investigating an issue with Outlook that prevents users from opening encrypted emails sent from other organizations. The problem affects users of the classic Outlook email client across all Office channels. A temporary workaround is available, involving adjustments to cross-tenant access settings. The error occurs when attempting to open OMEv2 encrypted emails, resulting in a message stating 'Configuring your computer for Information Rights Management.' The issue impacts users who receive encrypted emails from external tenants. The workaround involves enabling cross-tenant access to trust MFA claims from other organizations, which allows encrypted emails to be opened without errors. However, both the sending and receiving organizations must apply this fix for it to work.

Timeline

  1. 26.09.2025 19:43 1 articles · 3d ago

    Microsoft identifies Outlook encrypted email error affecting cross-tenant communications

    Microsoft has identified an issue where users of the classic Outlook email client cannot open encrypted emails sent from other organizations. A temporary workaround is available, involving adjustments to cross-tenant access settings. The workaround requires enabling cross-tenant access to trust MFA claims from other organizations, and both the sending and receiving organizations must apply the fix for it to work.

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