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All Alerts – page 3 of 3

Dated, sourced updates on SharePoint Online, Microsoft 365 service changes, and ShareMaster releases.

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Illustration: a legacy component powering down as a replacement lights up.
Retirements & End of Support

SharePoint Legacy Auth IDCRL Retires May 2026

Microsoft retired IDCRL cookie authentication for SharePoint Online on 1 May 2026 (MC1184649). Scripts using legacy auth now fail. Here is what to check.

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