topic Re: Unable to run notebooks in Data Engineering

Unable to run notebooks

wardy912 — Tue, 09 Sep 2025 09:28:11 GMT

Hi everyone,

We are currently unable to run notebooks in isolation or in pipelines, is anyone else having this issue?

Error message is below (removed URL and InstanceID)

Diagnostic information If you are seeking help from technical support, please provide the following information for them. Diagnostic ID: 82677d85-c745-47b2-b53d-5cfcfcb8565f Timestamp: 2025-09-09T09:22:02.138Z Message: [object CloseEvent] JSON { "type": "close", "timeStamp": 7788.299999999814, "code": 1000, "reason": "{\"reason\":\"Private link check failed.\",\"state\":\"private-link-check-failed\"}", "wasClean": true, "target": { "url":, "readyState": 3, "protocolsProfile": [ 7, 4801 ] }, "currentTarget": { "url":, "readyState": 3, "protocolsProfile": [ 7, 4801 ] }, "isTrusted": true } Additional info: InstanceId: Download Copy & close

Status page shows all services running smoothly

Microsoft Fabric service status

Re: Unable to run notebooks

Rohith — Tue, 09 Sep 2025 10:07:13 GMT

I am facing the same issue.

Re: Unable to run notebooks

CrazyCraigo — Tue, 09 Sep 2025 10:15:25 GMT

Yea, pretty much been the same prob here. I also tried a Spark job more directly and its reports a underlying issue (via a cryptic message of course).

Re: Unable to run notebooks

v-sgandrathi — Tue, 09 Sep 2025 11:21:15 GMT

Hi @wardy912,

Thank you for sharing the Diagnostic ID and reporting the issue.
We have received several community reports today regarding Spark sessions failing with the error private-link-check-failed, which is impacting both interactive notebooks and scheduled runs.

Here are a few steps you can take while we investigate further:

If your tenant has Tenant-level Private Link with public internet access blocked, please ensure you are connected to an approved network or VPN. If policy permits, you may briefly test from a non-private connection to help determine if the issue is related to Private Link.
Perform a DNS check for Private Endpoints: On an affected machine, verify that Fabric endpoints resolve to private IP addresses. The most common cause of Private Link failures is incorrect DNS records, please confirm that your Azure Private DNS zones linked to the VNet have the appropriate records and that Private Endpoints are in an Approved or Succeeded state.
Consider browser or proxy configurations: Notebooks use WebSockets, so proxies blocking WS/WSS or enforcing DNS-over-HTTPS can disrupt Private Endpoint resolution. If your organization uses DoH, try disabling it temporarily or allowlisting Fabric domains.
Review Private Endpoint objects in the Azure Portal: Ensure the connection state is Approved, the NIC is attached, and DNS zone links are healthy. If any objects appear outdated, please re-approve or redeploy as needed.

The documents below are shared for your review and reference:
Troubleshoot Azure Private Endpoint connectivity problems | Microsoft Learn
About private Links for secure access to Fabric - Microsoft Fabric | Microsoft Learn

Thank you.

Re: Unable to run notebooks

Adrian_Lee1 — Tue, 09 Sep 2025 11:31:15 GMT

I'm getting the same issue

Re: Unable to run notebooks

hp0lkm46 — Tue, 09 Sep 2025 12:02:10 GMT

Also having the same issue

Re: Unable to run notebooks

wardy912 — Tue, 09 Sep 2025 12:13:29 GMT

@hp0lkm46 , @Adrian_Lee1 , @CrazyCraigo , @Rohith , @v-sgandrathi

The service has been downgraded on the Fabric service status page

Microsoft Fabric service status

Re: Unable to run notebooks

wardy912 — Wed, 10 Sep 2025 09:01:42 GMT

The problem is now resolved, update from Microsoft Fabric service status

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I hope this helps, please give kudos and mark as solved if it does!

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