Missing the security tab
 

I used to have a tab labeled security when I clicked on properties of any
document. It has disappeared. I have disabled the simple sharing and still
no luck.

Missing the security tab
 

You must be logged on to the computer with an account that has
administrative credentials.

pdeverts wrote:

I used to have a tab labeled security when I clicked on properties of any
document. It has disappeared. I have disabled the simple sharing and still
no luck.