Not so sure. For example, see:

    
https://www.windows10forums.com/threads/com-ports-since-last-april-update-faulty.16976/

If I find anything more relevant I’ll let you know.

Meanwhile, can you confirm that your PC’s COM ports still work with other 
devices, and that the K3/P3 still work with the previous OS?

73,
Wayne
N6KR


> On May 28, 2018, at 4:12 AM, Mark Wheeler <[email protected]> wrote:
> 
> Wayne,
> 
> There were tons of problems listed associated with the latest windows 10 
> update, but none were COM port issues.  The search for a solution 
> continues...  Thanks.
> 
> Mark
> WU6R
> 
> On May 27, 2018, at 06:43 AM, Wayne Burdick <[email protected]> wrote:
> 
>> Try this:
>> 
>> https://www.ghacks.net/2018/05/01/all-the-issues-of-windows-10-version-1803-you-may-run-into/
>> 
>> Wayne
>> 
>> 
>>> On May 27, 2018, at 7:29 AM, Mark Wheeler <[email protected]> wrote:
>>> 
>>> With the latest Windows 10 update earlier this week, my K3S and P3 can no 
>>> longer communicate with my Windows 10 PC via the USB cables. I’ve gone into 
>>> Device Manager and right clicked on the COM12 device drive and clicked 
>>> “update driver” and that updated from a 2016 driver to a 2017 CM port 
>>> driver, but neither connect the PC to my K3S or P3. Any suggestions? Thank 
>>> you.
>>> 
>>> Mark
>>> WU6R
>>> (formally KM6HFR)
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