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The Solarwinds Netflow Service or the Solarwinds Flow Storage service does not stay up and often crashes. This error can be seen either in the NetflowBusinessLayer.log or theFastbitServerService.log log files.
ERROR SolarWinds.Orion.NetFlow.Service.Program - Unhandled exception: Message: The file exists.
This error is caused when either servers NTA application or Flow Storage Database (FSDB) have more than 65565 files in the C:\Windows\temp directory.
1. Stop Netflow or Flow Storage services.
2. Delete all the *.tmp files from C:\Windows\temp directory.
3. Restart services.
Applies to: NTA v4.0