Notebook new Standard or HC sessions won't start. This current seems to ocurre random

Hi,

Current wen starting note book sessions in a Fabric Workspace we get a messages like "Your compute session was disconnected."

This seems to have started last week after a little while all seem to work again and then starts failing again during the day.

It shows a Diagnostic information like: (Removed parts of shown key's

Diagnostic ID: 6f354ca5-3b33-4a62-b2e2-be7a9bdfcfe0

Timestamp: 2025-08-11T08:26:59.500Z

Message: [object CloseEvent]

JSON
{
"type": "close",
"timeStamp": 105513.20000000019,
"code": 1000,
"reason": "{\"reason\":\"Session error or stopped.\",\"state\":\"session-completed\"}",
"wasClean": true,
"target": {
"url": "wss://d9ada.pbidedicated.windows.net/webapi/capacities/D906ADA/workloads/Notebook/Data/Direct/api/workspaces/f4b104595/artifacts/de98e77fb980a0/jupyterApi/versions/1/api/kernels/c062a13b1e5/channels?token=dummy_token&session_id=eb9a5ead-e2ed",
"readyState": 3,
"protocolsProfile": [
7,
4608
]
},
"currentTarget": {
"url": "wss://d9044796ada.pbidedicated.windows.net/webapi/capacities/D90447C076ADA/workloads/Notebook/Data/Direct/api/workspaces/f4b404595/artifacts/de98e77f-43pi/versions/1/api/kernels/c062a148-0b9613b1e5/channels?token=dummy_token&session_id=eb9a5eed",
"readyState": 3,
"protocolsProfile": [
7,
4608
]
},
"isTrusted": true
}

Additional info: InstanceId: f7d170-9a8ce89b40f7