Data explorer spinning / unresponsive Edge

Question

Data explorer spinning / unresponsive Edge

Krizan, Steve 0

Yesterday was working fine until late morning. Any attempt to open Item or run a query against cosmos container spins for a very long time the first time, subsequent attempts return: "Error sending request: Failed to fetch"

Another coworker experienced the issue and I confirmed. Think it was related to an outage yesterday, but when that outage was resolved we still have the issue.

Is only occurring for him and I, other coworkers seem to be fine. They did not access data explorer during the outage however.

We have cleared cache, signed in and out of azure, reproduced in Chrome browser, rebooted, with no luck.

Krizan, Steve 0 Reputation points

2025-12-09T16:41:24.6966667+00:00

The issue has something to do with CORS and the latest version of Edge, at least for us and our VPN and firewall rules. We have downloaded Firefox as a short-term workaround and submitted a ticket with Microsoft.
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-09T16:46:39.64+00:00

Hi Krizan, Steve,

Could you please share the support request id for further process.
Krizan, Steve 0 Reputation points

2025-12-09T18:00:55.3766667+00:00

Case 2512090040007972
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-10T13:20:09.83+00:00

Hi Krizan, Steve,

Kindly review the reference shared earlier and please provide requested details through private message.
https://learn.microsoft.com/en-us/answers/questions/5604651/cannot-view-data-in-the-azure-cosmos-db-data-explo

Please let me know once you have an update, happy to assist further.
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-11T09:08:23.6466667+00:00

Hi Krizan, Steve,

I hope you had a chance to review the information shared earlier, and I hope this information has been helpful! If you still have questions, please let us know what is needed in the comments so the question can be answered.

1 answer

Your answer

Krizan, Steve 0 Reputation points

2025-12-09T16:41:24.6966667+00:00

The issue has something to do with CORS and the latest version of Edge, at least for us and our VPN and firewall rules. We have downloaded Firefox as a short-term workaround and submitted a ticket with Microsoft.
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-09T16:46:39.64+00:00

Hi Krizan, Steve,

Could you please share the support request id for further process.
Krizan, Steve 0 Reputation points

2025-12-09T18:00:55.3766667+00:00

Case 2512090040007972
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-10T13:20:09.83+00:00

Hi Krizan, Steve,

Kindly review the reference shared earlier and please provide requested details through private message.
https://learn.microsoft.com/en-us/answers/questions/5604651/cannot-view-data-in-the-azure-cosmos-db-data-explo

Please let me know once you have an update, happy to assist further.
Manoj Kumar Boyini 1,735 Reputation points Microsoft External Staff Moderator

2025-12-11T09:08:23.6466667+00:00

Hi Krizan, Steve,

I hope you had a chance to review the information shared earlier, and I hope this information has been helpful! If you still have questions, please let us know what is needed in the comments so the question can be answered.

Answer 1

Hi Krizan, Steve,

Please check firewall settings in Network tab - make sure to check "Allow Access from Azure Portal" upon choosing Selected Network in Networking tab.
Share a HAR file (via browser DevTools > Network tab) and any Console error logs you see when the error happens. Could you please confirm if your Cosmos account uses Private Endpoints or a routing gateway

In the meantime, please review the following:
https://learn.microsoft.com/en-us/answers/questions/5604651/cannot-view-data-in-the-azure-cosmos-db-data-explo

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Data explorer spinning / unresponsive Edge

1 answer

Your answer