What prevents writing to the com port in the terminal session of windows 2008 r2?

Question

Payment terminals

Hello,
background :
there is a server with Windows server 2008 r2 standart, we have 1c installed on it and remote desktops are configured
on the accountant's computer, a network cash desk and a bank pinpad for paying by cards are connected.
Previously, there was a pinpad from the company verifone 820 and everything worked fine, for some reason beyond my control I had to replace the pinpad. The choice fell on igentico iPP320. We had a bank and still have Sberbank.
problem :
The terminal when connected to the accountant's computer is defined as COM9. In the RDP settings, there is port forwarding, on the server we see that the forwarding is happening:

The port seems to be working, and it can even be "occupied", but the software from Sberbank gives an error:

in the logs when we run loadparm we see an error

09.11 11:22:29 LOADPARM: Loading GATE.DLL
09.11 11:22:29 GATE: SB_KERNEL.DLL is loaded
09.11 11:22:29 GATE: lock:'0000009C' 'UPOSWINMUTEX2'
09.11 11:22:30 GATE: unlock:'0000009C'
09.11 11:22:30 LOADPARM: GATE.DLL loaded
09.11 11:22:30 GATE: lock:'00000094' 'UPOSWINMUTEX2'
09.11 11:22:30 SBKRNL: Command = 10
09.11 11:22:30 SBKRNL: Open com 9
09.11 11:22:30 SBKRNL: COM write err 87
09.11 11:22:30 SBKRNL: COM write err 87
09.11 11:22:30 SBKRNL: Close com 9
09.11 11:22:30 SBKRNL: Result  = 99
09.11 11:22:30 GATE: unlock:'00000094'
09.11 11:22:30 GATE: lock:'00000094' 'UPOSWINMUTEX2'
09.11 11:22:30 GATE: unlock:'00000094'
09.11 11:22:30 LOADPARM: Unloading GATE.DLL...
09.11 11:22:30 GATE: SB_KERNEL.DLL is unloaded
09.11 11:22:30 LOADPARM: GATE.DLL unloaded
09.11 11:22:44 LOADPARM: Loading GATE.DLL
09.11 11:22:44 GATE: SB_KERNEL.DLL is loaded
09.11 11:22:44 GATE: lock:'0000009C' 'UPOSWINMUTEX2'
09.11 11:22:44 GATE: unlock:'0000009C'
09.11 11:22:44 LOADPARM: GATE.DLL loaded
09.11 11:22:44 GATE: lock:'00000094' 'UPOSWINMUTEX2'
09.11 11:22:44 SBKRNL: Command = 10
09.11 11:22:44 SBKRNL: Open com 9
09.11 11:22:44 SBKRNL: COM write err 87
09.11 11:22:44 SBKRNL: COM write err 87
09.11 11:22:44 SBKRNL: Close com 9
09.11 11:22:44 SBKRNL: Result  = 99
09.11 11:22:44 GATE: unlock:'00000094'
09.11 11:22:44 GATE: lock:'00000094' 'UPOSWINMUTEX2'
09.11 11:22:44 GATE: unlock:'00000094'
09.11 11:22:44 LOADPARM: Unloading GATE.DLL...
09.11 11:22:44 GATE: SB_KERNEL.DLL is unloaded
09.11 11:22:44 LOADPARM: GATE.DLL unloaded

The drivers are IngenicoUSBDrivers_3.14
There are some similar cases on all thematic forums, but the solutions proposed there do not save the situation.
Tell me, please, what could be the plug?

Answer 1

The problem was solved by removing the ingenico drivers downloaded from the off site and installing the drivers provided by Sberbank

Answer 2

Sometimes Windows has a buggy automatic detection of hardware and it thinks that a COM mouse is connected to the port, installs a driver for it and occupies the port.