Just updated Windows 10. Now AoE doesn't recognize CD drive

Microsoft’s latest Windows 10 update appeared last night (presumably to address Spectre and Meltdown). My system seems to be working fine, and I can access my CD (well, Blu-Ray) drive via File Explorer, but when I start AoE in Single Player mode, the game tells me I must insert a game CD. It’s in the drive and has never presented a problem before. Any suggestions (other than buying Definitive Edition if/when it’s released next month)? Thanks.

Never mind. Uninstall/reinstall fixed the problem.