I then booted back into MacOS and you’ve guessed it, the mouse didn’t work without having to re-pair it. Having installed these and rebooted, both the keyboard and mouse immediately stopped working. Update for Windows 10 Version 1709 for 圆4-based systems (KB058043) 2018-03 Security update for Adobe Flash Player (KB4088785) Windows malicious software removal tool 圆4 - March 2018 (KB890830) 2018-03 Cumulative Update for Windows 10 version 1709 for 圆4 systems (KB4088776) Definition update for Defender Antivirus (KB2267602) I then ran Windows update and installed the following. Right, with MacOS 10.13.3 installed from my Time Machine backup, and having installed Windows 10 Pro without running any updates everything worked fine. Sorry for the duplicate post, it won't allow me to edit or delete the previous one.
