"F:\ is not accessible. Incorrect function." on a new computer with Windows 10

[Daniel]

Hello,

I bought a new computer with Windows 10 Pro and installed Veracrypt 1.16, then 1.17 to access my encrypted external hard drives.

Problem : after I provide the password, Veracrypt succeed in mounting the volume on a letter, but I cannot access the letter at all in the explorer interface.

I get the error message :

"F:\ is not accessible. 

Incorrect function."

I tried with my 2 encrypted hard drives, the result is the same.

I encrypted from scratch a USB key, the encryption is successful, but after I get the same problem when trying to access it.

I tried to plug the hard drives (and the newly encrypted USB key) to my old computer also on Windows 10 Pro : I can access them without problems.

I installed the 1.0f2 version that I used to encrypt the disks on the new computer : the problem remains.

So I'm out of things I can try. Can you tell me how I can resolve this problem ?

Configuration : Macbook Pro with Windows 10 Pro, Kaspersky antivirus 2016.

[Andreas Boehlk]

You have to set the user access rights for the mapped drive.
Plan B: Start the VC-GUI with admin-rights
Regards
Andreas

[Mounir IDRASSI]

Not sure if it is an access right issue since it looks similar to the known Apple Macbook issue that has been reported and solved here:

• https://veracrypt.codeplex.com/workitem/177#CommentContainer22
• https://veracrypt.codeplex.com/workitem/341
• https://veracrypt.codeplex.com/workitem/355#CommentContainer2

You will find the solution in the links above (basically replace/remove Apple HFS driver)

[Daniel]

Thanks Mounir renaming the file resolved the problem, simple and sweet ! ;)

[Daniel]

I had to find thix fix again and had to do more research as my last post was not detailled enough.

Since the

Run Sysinternals Autoruns "Autoruns.exe" as administrator.
Search for: apple
uncheck Apple HFS
Done. Reboot...

hack doesn't work for me ("Apple HFS" doesn't show up in Autorun) and I don't want to buy Paragon's HFS+, the solution is to look for "applehfs.sys" file in Windows directory and subdirectories, then to rename it "applehfs-old.sys" (for example) and reboot. It solves the problem.

(and actually the applehfs.sys file is in "\Windows\System32\drivers" so you can directly go there)

[teddy]

the above url doesn't exist anymore, and did not work in 2023

because this page appears at the top of my search result, i just want to add another solution that worked for me recently
specifically for windows 10 on bootcamp on macbook pro 2015, apple installs AppleHFS.sys driver in windows for HFS (mac's file system)

this needs to be disabled for VeraCrypt to work when mounting drives
to disable:
1. move the file C:\Windows\System32\drivers\AppleHFS.sys to the Desktop or somewhere to keep if you want to restore this functionality
2. open regedit.exe and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\AppleHFS
right click and export this to some file for future reference if you want to restore HFS access functionality
3. delete this key
4. reboot windows