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Among other errors: SQL Server failed with error code 0xc0000000 to spawn a thread to process a new...


Among other errors: SQL Server failed with error code 0xc0000000 to spawn a thread to process a new login or connection.

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Kenneth Fisher
Kenneth Fisher
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My SQL Server instance has crashed 2ce in the last week now with the same symptoms.

My monitoring software shows nothing by way of CPU or IO pressure and then all of a sudden we start seeing the error:

There is insufficient system memory to run this query.


Then after a few minutes we see large numbers of this error:

SQL Server failed with error code 0xc0000000 to spawn a thread to process a new login or connection. Check the SQL Server error log and the Windows event logs for information about possible related problems. [CLIENT: 162.123.210.178]


At that point we are no longer able to connect to the instance. The server itself is still not showing any problems. Once the instance has been restarted everything appears to clear up.

After the 2nd occurrence I was able to find an additional error that occurred a few minutes before the first error:

The client was unable to reuse a session with SPID 75, which had been reset for connection pooling. This error may have been caused by an earlier operation failing. Check the error logs for failed operations immediately before this error message.


But I couldn't find any evidence of it in the log for the first occurrence. Of course by the time I checked some of the log for that period had rolled off.

I have a SQL Server 2005 SP2 build 3353 standard install on Windows NT 5.2 SP2 build 3790.

The server has 4 CPUs and 6gb of memory.

Does anyone have any suggestions of where I can start looking?

Kenneth Fisher
I was once offered a wizards hat but it got in the way of my dunce cap.
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michaelberry67
michaelberry67
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I am sorry no one replied. do you know how you solved this issue? I am having the same!
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