fast startup can be disabled, but manually rebooting once a week or so for decent daily use does the job, too.
i don't think it's related, but an almost-coincidentally timed incident of microsoft being microsoft was just brought to my attention: https://www.theregister.co.uk/2020/02/05/windows_10_binged/
... you honestly think for a brief moment that they have suficiently idiot-proofed and stupid-simplified OS interfaces to death...
... and then the new batch of idiots show up...
@arielmt I remember disabling fast startup in Windows 10 because I'm dual booting Windows and Linux.
@quirk same.
i confess it took me a while to figure out why i couldn't mount the windows drives in linux after shutting down windows but could after rebooting windows & letting grub choose linux instead.
there's no permanent solution for that because, since #windows 8, microsoft cheated to get decent startup and shutdown times: the fast startup feature.
when you tell windows to shut down, it goes into a hybrid sleep/hibernation state instead, & the next startup is basically a wake-up instead of a true kernel startup.
reboots don't do that. windows goes through a proper shut-down & actual startup.
go long enough without a proper reboot, & windows does strange things. this is one.