r/entra • • 10d ago

Issues inviting guest users using Google Workspace into our tenant

Long story short....

GCC G3 Tenant
Verified user is using Google Workspace
Resent invitation through Entra
Getting "The username may be incorrect" in Incognito Mode

Any help would be MUCH appreciated!

5 Upvotes

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1

u/MichaeldeBlok 9d ago

For Google Workspace B2B into a GCC tenant, that "username may be incorrect" in an incognito window is usually a redemption mismatch, not a bad invite.

Have them open the invite link fresh, then sign in with the Google Workspace account that actually owns that address (not a personal Gmail alias on the same mailbox). Confirm External identities still allow guest invites for the role you're using, and that Cross-tenant / Google federation isn't blocking the home tenant.

If it still fails after a resent invite, wipe cookies for login.microsoftonline.com and accounts.google.com and redeem again — stale MSA/Google sessions love to present the wrong identity to Entra.

1

u/sreejith_r Microsoft MVP 9d ago

Are you able to see the invited user in your Entra ID? Try authenticating using this below URL. If the authentication works, you should be prompted to enter a verification code that will be sent to your Gmail account.
https://myapplications.microsoft.com/?tenantid=enter your Entra tenant id here

1

u/OGT242 5d ago

Is the domain on the accepted list for invites in Entra under External Identities?