Azure API Management
An Azure service that provides a hybrid, multi-cloud management platform for APIs.
API Management Service: Unable to update due to service outage — Troubleshooting VNet injection failures
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maxk-6580
0
Reputation points
Problem description
I am experiencing issues updating my Azure API Management (APIM) service, specifically with Virtual Network (VNet) injection. The update fails during the process, returning an error indicating that the service cannot be updated with VNet injection at this time. I need assistance understanding the cause and how to resolve this issue.
Environment
Azure API Management Service in Canada East region, on the Premium tier, deployed in multiple regions including Italy North and Canada East.
What I've already tried
I completed a network comparison between a successful deployment (bhm07) and the failed one (bhm08-bhm10). I verified that the network configurations, including DNS and routing, are identical across the subnets. I also retried the update sequentially for bhm08-query, reproducing the failure, and preserved the failed state for further analysis.
Current status
I am seeking guidance on diagnosing the root cause of the update failure, specifically related to outbound connectivity or network configuration issues, and instructions on how to proceed to resolve the VNet injection problem.
Azure API Management
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Max Kryatov 0 Reputation points Microsoft Employee2026-08-22T23:06:40.36+00:00 Actual error response:
[ERROR] bhm08: [apim-query-mh-bhm08-prd-itn] Async poll failed: 400 {
"error": {
"code": "UpdateApiServiceFailed", "subCode": null, "message": "Unable to Update API service with vnet injection at this time. Please make sure the all the requirements are met as specified in the doc https://aka.ms/apimvnet. Otherwise, please open a support case for your API management service using the Azure portal.Please provide correlationId dbc637fe-0e95-4fb1-ba96-a628ef76ede9 and TimeStamp 8/22/2026 10:39:00 PM.", "details": null, "innerError": null}
}
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Mohammad Altaf 350 Reputation points Microsoft External Staff Moderator2026-08-23T00:45:36.56+00:00 Hello @maxk-6580 ,
Thank you for sharing the details and error information.
I am currently reviewing the APIM VNet Injection update failure and analyzing the deployment behavior in detail. I understand that the update operation is failing with the UpdateApiServiceFailed error despite the network configuration being validated against a working deployment.
I am investigating the issue further to determine the root cause and will provide an update as soon as I have more information to share.
Thank you!
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