I'm Admin, but Can't Compress Drives

I want to compress my c drive (and I choose the 'including subfolders' option) but when I select this, an error message comes up saying I need admin permission to do this. I'm the only user account, and this user account is set to admin. I also went into the 'security' tab in properties of the c drive and gave all authenticated users, administrators, users and system full control to do whatever they (me) want to do to the computer. Still, I cannot compress c drive. What do I need to do?
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  1. Have you tried to run the application as an administrator (right click, select run as administrator)?

    Also is UAC (User Account Control) disabled?

    Jessica
    Microsoft Windows Client Team
  2. JessicaD said:
    Have you tried to run the application as an administrator (right click, select run as administrator)?

    Also is UAC (User Account Control) disabled?

    Jessica
    Microsoft Windows Client Team


    The only way I know how to run the compress application is by right clicking on the c drive (after launching the windows explorer folder), but the "run the application as an administrator" does not appear in there. UAC is completely disabled.
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