check before: 2026-04-01
Product:
Microsoft 365 Apps, Outlook
Platform:
US Instances, Windows Desktop, World tenant
Status:
In development
Change type:
Links:
Details:
The new Outlook now supports LDAP (Lightweight Directory Access Protocol) directories for sending S/MIME encrypted emails. This allows users to add an LDAP directory in the new Outlook and use it to fetch recipients’ certificates from the configured directory when sending S/MIME encrypted messages. #newoutlookforwindows
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2025-11-17
updated:
2025-11-17
Docu to Check
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
LDAP Directory Integration
Without proper preparation, users may face difficulties in accessing LDAP directories, leading to delays in sending S/MIME encrypted emails and potential security risks due to improper certificate handling.
- roles: IT Support, End Users
- references: https://techcommunity.microsoft.com/t5/outlook-blog/outlook-ldap-directory-support-for-s-mime-in-new-outlook/ba-p/3701230
User Experience with S/MIME
If the change is implemented without adequate training, users may struggle to understand how to utilize the new LDAP feature for S/MIME, resulting in frustration and decreased productivity.
- roles: End Users, Training Coordinators
- references: https://techcommunity.microsoft.com/t5/outlook-blog/outlook-ldap-directory-support-for-s-mime-in-new-outlook/ba-p/3701230
Configutation Options**
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explanation for non-techies**
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Last updated 2 months ago ago
