If your domain administrator has disabled the Windows Store, there is no way to enable it without removing the PC from the domain and therefore the GPOs controlling it. Unless you have access to the domain and Group Policy, in which case you can do the following:
1) Launch Group Policy Management Console (GPMC).
2) Navigate to the Computer Configuration | Administrative Templates | Windows Components | Store node.
3) Locate the “Disable all apps from the Windows Store” policy and double-click to open it. Select the radio-button next to Disabled, then click the OK button to disable the policy. This will enable any application(s) installed from the Microsoft Store and will allow them to run.
4) In the same GPMC node above in step #2, locate the “Turn off the Store application” and double-click to open it. Select the radio-button next to Disabled, then click the OK button to disable the policy. This will enable the Microsoft Store completely, making it accessible to users.
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