Update Global Address List Error “WARNING: The recipient “xxxxxMicrosoft Exchange System Objects/xxxxx” is invalid and couldn’t be updated

KB ID 0000516  Problem Seen when manually trying to update the Global Address List, with the following powershell command: Update-GlobalAddressList -identity ‘Default Global Address List’ Error: WARNING: The recipient “{your domain name}/Microsoft Exchange System Objects/{A Public Folder Name}” is invalid and couldn’t be updated. or Error: WARNING: The recipient “{your domain name}/Microsoft...

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