Update KB5074109 rolled out on January 13 for Windows 11 versions 24H2 and 25H2. Reports soon started coming in that computers were crashing on startup and displaying the error message, UNMOUNTABLE_BOOT_VOLUME. Some users also noted a black screen with the error message, Your device ran into a problem and needs a restart. Microsoft released two out of band OOB updates on January 17 and January 24, respectively, to address issues encountered following the release of update KB5074109. As of...
