how to delete used com ports

madhuri Gamane

i want to delete com port which are in use (In my system com3,com4......com16).

i want to delete\uninstall these used com ports...

i have tried from registry

1 . HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\COM Name Arbiter

then modify ComDB to 0

2. run command prompt by administrator, then set devmgr_show_nonpresent_devices=1

start devmgmt.msc

uninstall hidden com ports...

though it deletes used com ports , my driver does not installed on these com ports it takes com 17, but i want from 3 to 9

also on reboot system all used com ports are comes as it is...

. plz help me, if anyone knows the solution..

2 Replies

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madhuri Gamane11y ago
hello, thank you for reading my question..
i have RFID reader whose API supports only for com ports from com3 to com9...
now i want to delete used com ports, so one of com3 to com9 will be free or change com port17 to com3 and vice versa which works fine for me...
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K Andrews11y ago
Why do you need your driver on only com3 to com9? The name of the com port should not impact your driver. By deleting or uninstalling com ports you could break another driver. Please explain your need to start uninstalling or deleting the com ports.
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