Azure PostgreSQL Flexible Server B1ms fails to provision in Belgium Central with InternalServerError

Question

Azure PostgreSQL Flexible Server B1ms fails to provision in Belgium Central with InternalServerError

RAFAEL AGUDO MARTIN 0

I am using an Azure for Students subscription and I cannot provision Azure Database for PostgreSQL Flexible Server in Belgium Central.

Configuration: PostgreSQL 17 Standard_B1ms Burstable tier 32 GB storage High availability disabled

I reproduced the issue both through the Azure Portal and Azure CLI, including with a different server name.

Both attempts return: InternalServerError

Tracking IDs: edef52b9-b418-4a82-be93-455ec3a5daac 3e16eb17-a391-4033-a3df-9cc57f8c93a6

The Microsoft.DBforPostgreSQL resource provider is registered.

My Azure VM is already located in Belgium Central, so I would like to deploy PostgreSQL in the same region rather than use another Azure region and incur inter-region traffic.

Could someone confirm whether Standard_B1ms provisioning is currently restricted or unavailable for Azure for Students subscriptions in Belgium Central?

SIVASANKAR YEDDULA 165 Reputation points Microsoft External Staff Moderator

2026-09-01T06:03:53.9333333+00:00

Hi @RAFAEL AGUDO MARTIN

Thank you for providing the detailed information and tracking IDs.

Based on Microsoft documentation, Belgium Central is a supported region for Azure Database for PostgreSQL Flexible Server, therefore this does not appear to be a general service availability issue for the region.

Since you are using an Azure for Students subscription, the issue is more likely related to one of the following:

A subscription-specific regional restriction.

A temporary regional capacity constraint.

Temporary unavailability of the Standard_B1ms SKU in Belgium Central.

A transient backend provisioning issue resulting in the generic InternalServerError.

As the Microsoft.DBforPostgreSQL resource provider is already registered, I recommend the following validation steps:

Review Subscription → Usage + quotas to verify that there are no quota-related restrictions for PostgreSQL Flexible Server resources.

Check the Azure Activity Log using the supplied tracking IDs to identify a more specific backend error.

Test deployment with another supported Burstable SKU to determine whether the issue is SKU-specific.

Retry the deployment after some time in case this is a temporary provisioning or capacity-related issue.

You can retrieve additional deployment details using:

Shell

az monitor activity-log list --correlation-id <correlation-id>

Microsoft documentation also notes that Azure Program subscriptions, including Azure for Students, may have limited access to certain regions and resources, and region-specific access restrictions can require additional review or access requests.

At this time, there is no documented evidence that Standard_B1ms is universally blocked or unavailable for all Azure for Students subscriptions in Belgium Central. Based on the available information, the behavior is more consistent with a subscription-specific restriction, regional capacity limitation, or temporary provisioning problem rather than a permanent SKU restriction.
Could you please share the detailed Activity Log entry or the full deployment error JSON associated with Tracking IDs edef52b9-b418-4a82-be93-455ec3a5daac and 3e16eb17-a391-4033-a3df-9cc57f8c93a6? That information may help determine whether this is a capacity issue, region access restriction, or a backend service error.
SIVASANKAR YEDDULA 165 Reputation points Microsoft External Staff Moderator

2026-09-01T16:06:32.01+00:00

Hi @RAFAEL AGUDO MARTIN ,
I hope the information provided has been helpful. If you have any further questions or need additional assistance, please let us know in the comments, and we will be glad to help. If this answer helps, please consider clicking Accept Answer so that other community members with similar questions can benefit as well.
SIVASANKAR YEDDULA 165 Reputation points Microsoft External Staff Moderator

2026-09-02T00:45:06.3966667+00:00

Hi @RAFAEL AGUDO MARTIN ,
I hope the information provided has been helpful. If you have any further questions or need additional assistance, please let us know in the comments, and we will be glad to help. If this answer helps, please consider clicking Accept Answer so that other community members with similar questions can benefit as well.

1 answer

Your answer

SIVASANKAR YEDDULA 165 Reputation points Microsoft External Staff Moderator

2026-09-01T16:06:32.01+00:00

Hi @RAFAEL AGUDO MARTIN ,
I hope the information provided has been helpful. If you have any further questions or need additional assistance, please let us know in the comments, and we will be glad to help. If this answer helps, please consider clicking Accept Answer so that other community members with similar questions can benefit as well.
SIVASANKAR YEDDULA 165 Reputation points Microsoft External Staff Moderator

2026-09-02T00:45:06.3966667+00:00

Hi @RAFAEL AGUDO MARTIN ,
I hope the information provided has been helpful. If you have any further questions or need additional assistance, please let us know in the comments, and we will be glad to help. If this answer helps, please consider clicking Accept Answer so that other community members with similar questions can benefit as well.

Answer 1

@RAFAEL AGUDO MARTIN I hope you are doing well,

Belgium Central does support Azure Database for PostgreSQL Flexible Server, so this does not appear to be a general regional availability issue. https://learn.microsoft.com/en-us/azure/postgresql/overview

Because you are using an Azure for Students subscription, the more likely possibilities are a subscription-specific regional restriction, quota/capacity limitation, or temporary provisioning issue. Microsoft specifically notes that Azure program subscriptions, including Azure for Students, can have limited region access. https://learn.microsoft.com/en-us/azure/postgresql/troubleshoot/how-to-resolve-capacity-errors

Since the resource provider is already registered, I would check the following:

· Check Subscriptions → Usage + quotas for PostgreSQL Flexible Server in Belgium Central.

· Try the same deployment with another supported Burstable SKU, if available.

· Check the Activity Log using the correlation/tracking ID from the failed deployment.

· Retry after a few minutes, as Microsoft recommends for InternalServerError.

·

You can also run:

az monitor activity-log list --correlation-id <correlation-id>

Microsoft's troubleshooting guidance specifically recommends checking the Activity Log for InternalServerError provisioning failures. Please let us know if you find something specific in logs.

So I would not conclude yet that B1ms is unavailable for all Azure for Students subscriptions in Belgium Central. The evidence points more toward a subscription-specific restriction, quota, or temporary provisioning issue.

· Microsoft: Resolve capacity errors for PostgreSQL Flexible Server

If this answer helped clarify the platform capabilities and save you troubleshooting time, please consider marking it as Accepted. This helps others in the community find similar solutions.