Every time I try to install the Windows 8.1 update it tells me that I must log onto an account that has "administrator privileges." I am the administrator on my computer. Any ideas how to fix this and get the 8.1 update?

1. Seems your computer is compatible with W 8.1 x64

http://www.dell.com/support/drivers/us/en/19/Product/inspiron-15-3521

2. Give atry to following

http://social.technet.microsoft.com/Forums/windows/en-US/fe87d35b-12b7-4176-89de-a38601937c9d/windows-store-doesnt-let-me-upgrade-to-81-says-i-am-not-administrator?forum=w8itproinstall

http://answers.microsoft.com/en-us/windows/forum/windows8_1-windows_install/cant-update-to-win-81-admin-privileges/bd83adf5-d45e-4b9f-84dc-ede7cf67313c

3. Double check if prerequisites are met.

http://windows.microsoft.com/en-us/windows-8/update-from-windows-8-tutorial

Regards

Milos

I will try this thank you.

Hi,

We have not heard from you in a couple of days. I would like to know if the issue was resolved.

If the issue still persists,please check Windows update to see if you installed the Microsoft update KB2871389.

If you have installed this update,please uninstall the Microsoft Update KB2871389 to check the result.

You can perform the follow steps to uninstall this update.

1.Open  Control Panel\All Control Panel Items\Programs and Features.

2.Click View installed updates, and find Microsoft Update KB2871389.

3.Right-click this update to uninstall it.

4.Reboot your computer.

Regards,