Monthly Archives: June 2026

Microsoft Moves Your Chat

Microsoft has been migrating Teams private channel data from participant mailboxes to new dedicated channel Group mailboxes since September 2025 and started deleting the ownerless or archived channels June 5th. Redgrave LLP’s Staci Kaliner wrote an excellent summary of the changes and the potential impact on holds, compliance and eDiscovery. All of this raises the risk of inadvertent loss of Teams communications for [...]

By |2026-07-01T07:54:43-05:00June 29th, 2026|Essay, ESI Sources, Architecture|1 Comment

Purview eDiscovery Sandboxes

There are times when counsel, auditors, regulators, etc. need to immediately conduct their own searches on broad or narrow subsets of your M365 tenant. In the legacy compliance center and other enterprise archives we set this up using custom case roles and a matter restricted to the scope. In the new unified Purview UI you will have to use compliance boundaries for relatively large [...]

By |2026-06-01T13:44:58-05:00June 1st, 2026|Essay|1 Comment
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