Forum Discussion
Helper IISession error status code 430
Hi syl-ade
1. Check for active Spark sessions:
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Go to Monitoring Hub - Spark tab.
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End or cancel any running sessions. Even if you think none are active, check once - some sessions stay open in the background.
2. Wait a few minutes:
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After stopping sessions, wait 5–10 minutes.
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Spark sometimes keeps resources busy for a short time after a job ends.
3. Restart the notebook:
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Close your current notebook.
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Reopen it and run the first cell again - this starts a new, clean Spark session.
4. Check capacity limits:
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If the error still appears, your workspace is at its capacity limit (SKU).
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Contact your admin to increase Fabric capacity or use a higher SKU.
5. Try again later if needed:
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When other users’ Spark jobs finish, your capacity frees up automatically.
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Then you can start your session without issues.
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Helper IIThanks, but Capacity Metrics does not work properly.
Anyway... I do not have any Spark Sessions currently running.
Super UserHi syl-ade,
When the capacity reaches its limit, it usually has been over extended for a while and takes a while to burndown before it is usable again.
see Understand your Fabric capacity throttling - Microsoft Fabric | Microsoft Learn
In capacity metrics app, ensure you have your capacity selected and the semantic model has refreshed.
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