Cannot mount NTFS partitions because of Windows 10?

This happens since Windows 8, when you use the new hybrid shutdown, which is basically a logoff + hibernation. And the hibernation can cause issues, if you now mount the NTFS partition.

You have to do a full shutdown in Windows 10, by pressing the SHIFT key + clicking on shutdown.

It has to do with Windows 10 Hybrid Shutdown (a.k.a. Fast Boot) feature. See http://www.howtogeek.com/236807/how-to-mount-your-windows-10-or-8-system-drive-on-linux/.

Short term solution: be sure to select the “Restart” option in Windows instead of the “Shut down” option whenever you want to switch to Linux.

Long term: Permanently Disable Hybrid Boot From Windows, the Power Options Control Panel, and click “Change what the power buttons do”. You may have to click the “Change settings that are currently unavailable” link to enable changing this configuration. Scroll down and uncheck the “Turn on fast start-up (recommended)” option. Click “Save changes” to save your changes.

The next time you shut down Windows, it will perform a full shut down, just like Windows 7 always did.

Use ntfsfix in the terminal , even if you can't access Windows

sudo ntfsfix /dev/XY //Previous wasn't working for me.

where XY is the partition

e.g sda2 or sdb1

ntfsfix repairs some fundamental NTFS inconsistencies, resets the NTFS journal file and schedules an NTFS consistency check for the first boot into Windows.