I had retrieved a harddisk out of a broken laptop containing Windows 10 in order to retrieve some files from it. The harddisk had been removed from the broken laptop and then installed in a HDD enclosure with USB connection. When I connected it to a Windows computer I could browse the Users folder but clicking on a user’s folder displayed a message that I didn’t have permissions to open it unless I continued as administrator. After the progress bar had went to 100%, I still couldn’t access the folder.
Instead I connected it to a Linux/Ubuntu computer and now the message “The NTFS partition is in an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the `ro` mount option.” was displayed when connected. The original laptop had been in a hibernate state when it broke which locks the filesystem.
It turned out that the easiest solution was to connect the USB harddrive to a laptop and press F10 to select boot device during boot up (the key might be different depending on brand, on my Samsing it was F10). I selected the USB harddisk and it booted after fixing the disk automatically. I was actually a bit hesitant to do this because I know from earlier Windows version that it usually was a hopeless task to boot on a harddisk that had been moved from one host computer to another. In Windows 10 it looks like they have fixed this.
I could log in to Windows as the original user and retrieve the files. After shutting it down in a controlled manner, it was also possible to mount the disk in Linux/Ubuntu..