RDP 2012(R2) – session collection – profile disk – 800391163

While creating a session collection on Windows 2012/2012R2, and specifying a share to host profile disks, you get error 800391163:

While applying, one of the RDP will create VHD template on the share using Local System:

In details:

Even if the computers objects have full control on NTFS, it still fails.

You have to give “full control” to “everyone” on the share, “change” is not enough:

Another closed case ^^