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. 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' (USB VID413C&PID8197&REV0112), 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. So many replies. I'm impressed. Anyway, just for the record, I tested various Bluetooth dongles with the same laptop computer, with the exact same result: Bluetooth socekts seem to work, but I'm still unale to use any Bluetooth virtual COM ports.
I tried downgrading and upgrading again the BT drivers (got from the Dell website) too, with no more success. For what it's worth, I also got my hands on a low-end tablet running Windows 8.1, and found out that it showed very similar symptoms: no problem using sockets, but the virtual COM ports won't open. I'm not sure the problem is exactly the same, as I don't know the hardware on that tablet and couldn't do much testing with it, but this might be an indication that the problem with BT virtual COM ports is not specific to W10 but was already present on W8 (sorry, I've avoided W8 as much as I could, especially on workstations, and had never tested its COM port features before). Does anybody have some insight on this?
Any experience (be it successful or unsuccessful) with BT COM ports on Windows 8 or 10? And with what hardware (HID would be helpful) and what BT stack/software? (I found several articles on the Web explaining how to pair devices and specifically create virtual COM ports on W8, so I assume it actually works on.some. configurations.) To be continued. Hi GmalEco, you are not alone.we also tried to use the virtual coms, which are automatically created as you described it, but are unable to get them running. Actually, we stepped one level deeper and are trying to use RFCOMM via socketconnect to talk to our devices. We managed to get a printer running (via BT-SPP Profile), but we are unable to get another own developed device to communicate.
One thing we found out: The Windows version from inside preview behaves different as a 'fresh' install of the final downloaded from MS. That means it produces different errormessages like 'Element Not Found'. Still to be continued.
You should have stated that in the original post, it would have saved time. Open Device Manager 2. Expand the Ports (COM & LPT) list 3. Right-click on the COM: port you wish to reassign and choose 'Properties' 4. Select the 'Port Settings' tab 5. Click the 'Advanced' button 6.
Locate the 'COM Port Number' drop down (most likely bottom left) and change it to what you want it to be. If you see '(in use)' next to the port you wish to use it means that there is already an assigned port that will need to be reassigned before you can use it.
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