Permission denied,Perhaps you do not have access to a directory or file system.

Question

The sentence written upon, is shown when I am going to upgrade X-plane 11.

I bought ,my x-plane11, by digital version.

Answer 1

By default, X‑Plane will install to the Desktop. Though it can be installed elsewhere (by clicking the Change Destination button), it is strongly recommended that it be placed on the Desktop so that the folder can be found in the future, and so it has correct permission settings. Check destination folder with read/write permissions. You can read more about installation of X-Plane here.

Comments

I just do this but the problem goes on.

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Check your folder permissions or move your X-Plane folder to another location. You can read more about file and folder permissions here.