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August 14, 2026 02:38 Troubleshooting for Each HENNGE One Service

March 27, 2026 06:04 [Access Control] Request to customers who are planning to upgrade, replace, or add Windows Server

June 26, 2026 05:28 Notice of Summer Closure for HENNGE One Support Channels (2026)

August 07, 2026 00:59 [Critical] Request to Update Permissions Due to Migration of Exchange Online Integration Feature (Graph API)

April 28, 2026 06:13 [Important] End of Service Notice for HENNGE Email Archive Classic Edition on September 30, 2026

April 01, 2026 01:58 Notice of Revision of HENNGE One Terms of Service (Revision Date: April 1st, 2026)

March 06, 2026 08:35 [Critical] Notice of Termination of "Perpetual" Email Data Retention for HENNGE Email Archive on December 31, 2026

November 19, 2020 09:14 About HENNGE Device Certificate service regular maintenance down times

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