Were you able to connect remote keyboard with previous version?
Does this problem started after installing version 1.7?
I do not use Remote Keyboard often but in January no issues occurred. Indeed, taking in consideration release date of 1.7, it is possible that the issue has been caused by 1.7. Anyways, I couldn’t find the previous version to roll back....
I was also having connection issues on my iPhone 6s (iOS 9.2.1) after upgrading the Host app on my PC to v1.7. I started with v1.7 of the iOS app and v1.6 of the Host app and had no issues.
Then I found a statement in the Remote Keyboard user's guide document on the Intel website about the possibility of two instances of the Host app on the PC when you do the automatic upgrade of the Host app. I did the automatic upgrade from v1.6 to v1.7 when the notice popped up. Sure enough when I checked in Windows taskmgr, there were two instances of the Host app. The user's guide recommendation is to completely uninstall the Host app from the PC, then download and reinstall the latest version (v1.7 in my case). After I did that I had no more problems.
Maybe this is also your case.
Correction....I started with v1.6.1 (dated Feb 2, 2016) of the Host app, not v1.6 (dated Jan 25, 2016 in the release notes).
Tanks for suggestion! Indeed, I have two instances of the Host app running.
However, when I uninstall the Host app and try to reinstall it (v1.7 downloaded from Intel site), I get message “Intel Remote Keyboard is currently running. Would you like to close Intel Remote Keyboard and continue?”. If I answer “Yes” the installation competes but, again, I still get two Host app instances running. The iPhones still crash right after scanning of the QR-code as well.
The situation remains unchanged (incl. the message “Intel Remote Keyboard is currently running…”!!!) even if I stop the Host app, uninstall it and clean up all remained corresponding registry entry’s, files and directories.
This is exactly what I did. The result of this is described in my previous post.