Azure DevOps Deployment Groups stuck loading – ReactRootAdapter.js returns 404 BlobNotFound

Issue description

We are experiencing an issue with Azure DevOps Services where the Pipelines → Deployment groups page remains indefinitely on "Loading..." and never displays the deployment groups.

Our Azure DevOps organisation is hosted in West Europe.

Browser errors

Using browser Developer Tools, we identified the following JavaScript resource failing to load:

https://cdn.vsassets.io/v/M280_20261026.4/_scripts/TFS/min/VSS/ReactRootAdapter.js

The request returns:

• HTTP Status: 404 Not Found

Error Code: BlobNotFound

Error Message: The specified blob does not exist.

The browser console also reports:

Script error for "VSS/ReactRootAdapter"

Troubleshooting performed

Tested using Google Chrome and Microsoft Edge InPrivate.

Reproduced the issue after disabling the browser cache.

Tested the JavaScript resource directly from our corporate internet connection.

Repeated the test using an independent LTE connection.

Repeated the test using mobile data.

The same BlobNotFound response was received across the different networks.

Assessment

The CDN endpoint is reachable, but the requested JavaScript resource returns 404. This suggests a missing or incorrectly referenced frontend asset rather than a local firewall or connectivity issue.

We have not made changes to our deployment agents or deployment groups.

Assistance requested

Could the Azure DevOps engineering team please investigate whether the referenced JavaScript resource is missing from the Azure DevOps CDN deployment?

We would also appreciate confirmation of whether this is a known issue affecting the Deployment Groups interface and whether a workaround is available.

Thank you.Issue description

We are experiencing an issue with Azure DevOps Services where the Pipelines → Deployment groups page remains indefinitely on "Loading..." and never displays the deployment groups.

Our Azure DevOps organisation is hosted in West Europe.

Browser errors

Using browser Developer Tools, we identified the following JavaScript resource failing to load:

https://cdn.vsassets.io/v/M280_20261026.4/_scripts/TFS/min/VSS/ReactRootAdapter.js

The request returns:

HTTP Status: 404 Not Found

Error Code: BlobNotFound

Error Message: The specified blob does not exist.

The browser console also reports:

Script error for "VSS/ReactRootAdapter"

Troubleshooting performed

Tested using Google Chrome and Microsoft Edge InPrivate.

Reproduced the issue after disabling the browser cache.

Tested the JavaScript resource directly from our corporate internet connection.

Repeated the test using an independent LTE connection.

Repeated the test using mobile data.

The same BlobNotFound response was received across the different networks.

Assessment

The CDN endpoint is reachable, but the requested JavaScript resource returns 404. This suggests a missing or incorrectly referenced frontend asset rather than a local firewall or connectivity issue.

We have not made changes to our deployment agents or deployment groups.

Assistance requested

Could the Azure DevOps engineering team please investigate whether the referenced JavaScript resource is missing from the Azure DevOps CDN deployment?

We would also appreciate confirmation of whether this is a known issue affecting the Deployment Groups interface and whether a workaround is available.

Thank you.