Logitech Wireless Keyboards MK540. One of the most worthless bug ridden pieces of crap keyboard I have ever purchased. Two right in a row that within 30 days developed the known and famous logitech loss of connection to the unifying receiver.
Does not work correctly with Outlook 365. Constant loss of connection issues
Does not work correctly with Word 365. Constant loss of connection issues
Does not work correctly with Fly Fishing Simulator HD. Constant and irritating loss of connection issues.
IMO the problem is Logitech’s outdated and shitty unifying software not designed to work with Windows 10 coupled with lousy unifying receivers.
This loss of connection issue was never a problem with my first MK540 keyboard and Windows Seven nor with Windows 10 until I got to 1903.
These keyboards were purchased thru Microcenter as New but I suspect both were refurbished and not marked as refurbs.
Neither Logitech nor Microsoft give a shit about their retail customers anymore.