What is "open of \\.\COM## failed with 5 [Access is denied.]" error in Predator DNC?
Problem
The logs in Predator DNC show a failed with 5 error.
Reason
Indicates the COM port is in use and unable to be opened by Predator DNC.
Solutions
- Occasionally some network-based devices do not release the port fast enough causing a false error; simply restarting DNC might do the trick
- Close any additional PXPs that may be open (Close Additional PXP Configuration File)
- Check if another machine in Predator DNC is using the same COM port
- Check if another DNC application is using the COM port
- If using network-based hardware such as a Moxa, confirm no other application is connecting to it
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