Error When Syncing Peer Virtual Networks Between Two Azure Directories

Question

We are attempting to sync two peer virtual networks between separate Azure directories but are encountering the following error (see attached image).

Could you help us understand the cause of this issue and any possible solutions? Are there specific permissions or configurations required for cross-directory VNet peering?

Thanks

Answer 1

Hello , Welcome to MS Q&A

The error message shows "Remote sync required", which means that the peering configuration is not fully synchronized between the two networks.

Fix: Go to the Azure portal in the remote directory (tenant/subscription) and manually synchronize the peering.

Missing Permissions or Authentication Issues

• Ensure you have the required permissions in both directories.
• The Network Contributor role (or a custom role with Microsoft.Network/virtualNetworks/peer/action) must be assigned to your user in both subscriptions.

Please check and let us know if you have this

Kindly accept answer if it helps

Thanks

Deepanshu

Answer 2

Hello EA

Greetings!

1. Could you please let me know if you have added any new address ranges in the VNET and check for any overlapping address ranges?
2. Additionally, you should have the required permissions for both tenants. The Network Contributor role is needed for both subscriptions in the two tenants.
3. If possible, please share the error screenshot.
4. Also, could you let me know if the peering has been done with VHub or the virtual network?

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