unable to start a notebook session (DIagnostic: fetch_kernel_specs NULL)

[jochenj]

anyone seen that before when opening any notebook:

While in the ribbonbar "View" is working all others are not/greyed out suddenly: Home, Edit, Run

In addition i get this strange error when trying to start a cell:

We are unable to start a notebook session. To re-establish the connection, run the notebook again.
Diagnostic info: (fetch_kernel_specs; gzt5h9) [0] null

[suparnababu8 · Accepted solution]

Hi @jochenj 

I didn't get such type of error when am running the notebooks. Just you can logout from fabric and log-in and try ti run again the notebook. If ot worked fine, other wise you can raise a support ticket. How to create a support ticket, pls follow this How to create a Fabric and Power BI Support ticket - Power BI | Microsoft Learn

Please let  me know if it works.

Thank you!

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[jochenj]

tried logoff/logon but didn't help after >30minutes it started working again. can only hope that this will not happen again on production system. 

[suparnababu8]

Hope it will  not repet. 😊 Thanks for confirmation!

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