virtual com port mahem

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  • Problem
  • Updated 4 years ago
  • (Edited)

COM ports become unusable after reboot, will not stay uninstalled

An associate just purchased a 6500 (Maestro and Flex knob backorder) and has been running for a few weeks.  Called me up with an interesting problem after an unexpected computer shutdown.  Windows 7, desktop arrangement

Initial Symptom:  All the defined CAT COM ports disappeared and would not accept re-issue with the same port numbers.

Device Management shows 20 port pairs.  Uninstall and reboot they all come back, repeatedly.

Uninstall SmartSDR and Flex VSP, uninstall ports, reboot, they come back.

Get things working by creating a new list of COM ports (after reinstall of SmartSDR)

BUT:  Reboot the computer and they become unusable (missing in Smart CAT) but still in Device Management.

Anyone have this problem before and know how to fix it?

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Stan - VA7NF

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Posted 4 years ago

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Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

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The forced reboot of Windows can result in corrupted files if the application is not given enough time to shut down properly.  I believe this has happened to SmartSDR CAT which has resulted in the virtual com port pairs becoming disassociated from the CAT application.  This is not a fatal issue but is one that is not easily corrected by users.

Your friend needs to enter a HelpDesk support ticket (  And do it sooner than later. We can usually resolve this issue in less than a day.

For details on how to submit a HelpDesk support ticket, please refer to the following URL:

Once the support ticket is submitted, a support engineer will be in contact so we can resolve the issue.