Hi @Jeremy ,
Based on my understanding of your scenario, you should be able update the email address to the correct one by updating the InvitedUserEmailAddress property. https://learn.microsoft.com/en-us/azure/active-directory/external-identities/reset-redemption-status
You can use either Powershell or Graph API to do this and should be able to set the redemption status.
PowerShell
AI Convert
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Install-Module Microsoft.Graph
Select-MgProfile -Name v1.0
Connect-MgGraph -Scopes "User.ReadWrite.All"
$user = Get-MgUser -Filter "startsWith(mail, 'john.doe@fabrikam.net')"
New-MgInvitation `
-InvitedUserEmailAddress $user.Mail `
-InviteRedirectUrl "https://myapps.microsoft.com" `
-ResetRedemption `
-SendInvitationMessage `
-InvitedUser $user
If you mean that you have tried this and it did not work, let me know and we can troubleshoot. If you send me an email to AzCommunity@microsoft.com ("Attn: Marilee Turscak) and include your subscription ID, I can activate a one-time free support case to get this looked into.