ERROR: No Client Access allowed despite all correct configs (DWD, API, App Access, JSON Key)

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Kelby Novaria

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Nov 14, 2025, 4:56:27 PM (5 days ago) Nov 14
to GAM for Google Workspace

Hello,

I am setting up GAM on a GCE instance and am running into a persistent ERROR: No Client Access allowed that I cannot solve. I have already waited several hours for all settings to sync.

Here is what I have verified:

  1. GCE VM: Set to "Allow full access to all Cloud APIs."

  2. GCP Project: The "Admin SDK API" is enabled.

  3. GCP Service Account: The service account is enabled.

  4. Google Admin (DWD): The Client ID has the correct 5 scopes (user, group, orgunit, gmail, drive) added as a single, comma-separated line.

  5. Google Admin (App Access Control): The Client ID has been added and set to "Trusted" for the root domain.

  6. User Account: I am a Super Admin, and the error persists when testing against other Super Admin accounts.

I get the exact same error when using both gam create gcpserviceaccount AND when I manually upload a downloaded JSON key file for the service account.

The error is not a sync issue, and it's not a local config file issue. It must be a Google Workspace security policy that is overriding all of these settings. What other policy (Context-Aware Access, etc.) could be causing a service account to be blocked like this?

Thank you.

Ross Scroggs

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Nov 14, 2025, 4:57:59 PM (5 days ago) Nov 14
to google-ap...@googlegroups.com
Send me a private Meet/Zoom invitation and I'll help.

Ross
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Ross Scroggs



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