fprintd times out

On login, sudo call, or any authentication attempt, the process hangs for a while, then prompts for password. Expected behavior: immediately display fingerprint prompt. Upon investigation, fprintd-verify, fprintd-enroll, fprintd-delete, and fprintd-list all time out with the following error:

$ fprintd-list $USERNAME # example command
Failed to get Fprintd manager: Error calling StartServiceByName for net.reactivated.Fprint: Timeout was reached

My fingerprint sensor is supported; fprintd, fprintd-pam, and libfprint were installed from official repositories on distro install. All are configured as default when installed, with no modificatons. Running Fedora 42. This behavior was not present a week ago, when I used fprintd-enroll right-middle-finger to register a fingerprint. It developed sometime after a system upgrade from Fedora 41 to 42.