Hi,

I just migrated to Windows 10 today, and I'm having trouble with the virtual COM ports over Bluetooth.

I work with many devices that use the SerialPort Profile to communicate over Bluetooth.

Everything was fine on Windows 7 (each device had its own virtual COM port, which I could use with any serial terminal (mostly PuTTY).

Here is what happened with the migration to W10:

- First, the migration process removed all virtual COM ports from the system without notice. OK, why not, I don't really mind a little cleanup.

- Then I tried to pair several devices..

- The first three created two COM ports for each: one outgoing (which I assume is the 'regular' one), and one ingoing.

- The two others only created one outgoing port.

- But the big issue is I am totally unable to use any of these COM ports to communicate with the devices: the ingoing ports open but nothing happens (I guess this is normal since the devices are not supposed to initiate any communication), and the outgoing ports just refuse to open any connection, no matter what settings I use. I can see them, list them with the UI or through WMI, but they just won't let me open any serial communication.

- I tried a few different serial terminal programs with the exact same result.

N12231, 2007, 620 pages. Kamus ilmiah pdf.

- I tried deleting and recreating the COM ports in various ways (using the new 'settings' window, via the Control Panel, or via the Device Manager), with no success: none of these outgoing ports will open.

So the question is: is this normal? what am I supposed to do to use these virtual COM ports?

Some additional elements of information:

- Other Bluetooth operations work fine (for instance using BT headphones, or even connecting to the same devices I'm trying to use the COM port with, but via a direct SPP socket).

- Virtual COM ports over USB work fine.

- My Bluetooth chip is an embedded 'Dell Wireless 380 Bluetooth 4.0 Module' (USBVID_413C&PID_8197&REV_0112), with the same default Broadcom driver as before. The driver for the virtual ports is the default one by Microsoft (bthport.inf).

Thanks in advance for your advice.

Regards,

GM