Cannot write to Windows to Go root directory

I have a Windows to Go drive that I'd also like to use as a normal flash drive.

However, I can't move files to the root directory, or copy files there. Attempting to do so produces this error:

An unexpected error is keeping you from creating the file. If you continue to receive this error, you can use the error code to search for helm with this problem.

Error 0x80070522: A required privilege is not held by the client.

Looking around for a solution seems to turn up fixes that apply for a locked-up C: drive, but this drive isn't C:, and turning off my own personal UAC doesn't sound portable.

Note:

Giving Everyone Full Control in the security settings does not seem to help.

E: NT AUTHORITY\Authenticated Users:(S,AD)

NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(M)

NT AUTHORITY\SYSTEM:(OI)(CF)(F)

BUILTIN\Administrators:(OI)(CI)(F)

Everyone:(OI)(CI)(F)

BUILTIN\Users:(OI)(CI)(RX)

Mandatory Label\High Mandatory Level :(OI)(NP)(IO)(NW)

Creating a file from an administrator PowerShell session works fine.

Have you tried disabling UAC? Same thing happened on my Workstation, and now it is working great.

• Start/Run/secpol.msc
• Local Policies
• Security Options
• User Account Control: Run all admins in admin approval mode and Right Click
• Click properties
• Check disabled
• Reboot Computer/PC.