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Topic: Problems with operation of the virtual com-port.

On the computer the operating system windows 10, is the device connected to the computer through . At  this device there is the virtual serial port through which special a software works with the device. Once a software ceased to see the device through a serial port. Through   sees normally, on other operating systems the same device works perfectly, even by the same machine in . A software it has been reinstalled, did not help. Device changeover did not help. I think something in an operating system. Whether there is at you what  thoughts or councils, a venerable audience?

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Re: Problems with operation of the virtual com-port.

nrmBeginner;
At first, it is necessary to understand that the virtual serial port is in an any way "driver" which should be "digitally signed".
> windows 10 Once
"One fine moment" presumably update 1709> 1803
MS sometimes something breaks, to treat heavily, to the mere mortal as a rule it is unreal, to press on MS probably, but too it is heavy (sometimes it is possible to force to "cure" in a year, sometimes something break so that "bug" is dragged by decades from whists to 10, and they do not correct it).
But in general, I can not confirm that in 1803 broke something globally on this subject.
And here with "signatures" there can be troubles.
It is necessary to look when also what type the signature signs the driver of your port.
After an output 10 the policy of the signature of drivers changed, but is real they it did not observe.
If it is signed to (July? 2015 date of an output 10), this one. If after, are possible .
If the reason that helps with it a mode of "switch-off of check of the signature of drivers" (F8 at start of a computer each time - for the classical menu of loading, for blue - through 2 reboots), but here how much  ....
If 10 days after update 1709> 1803 did not transit, can try to roll away to 1709 (but to retain 1709 from the further attempts will "be updated" to 1803 heavily).

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Re: Problems with operation of the virtual com-port.

77, generally the driver standard, the supplier , the signature too.

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Re: Problems with operation of the virtual com-port.

nrmBeginner wrote:

Dmitrij77, generally the driver standard, the supplier , the signature too.

Hardly.
The manager of devices
Your device-> Properties
On the tab the Driver the Convergence button
And most likely there some files, and not all from MS.
Well, if with Virtual COM Port it is formal OK, the piece () the turbid means with  something not so, but  it generally.
Not, well if the problem arose after 1709> 1803 rollback on 1709 should help (without going into details).