OK. I'm stumped. Doesn't happen often, but here I am. I have a bunch of computers in the house for me and the family, and I'm the administrator on most of them. I have 4 desktops that I use to share stuff for everyone to use, and no servers, so everything is Workgroup access. I have several RAID arrays hung off some of the machines to access to shared stuff. I have the same user ID and password on all the machines. I just updated one of the desktops to Windows 8.1 by adding a new SSD and installing Windows 8.1 onto it. After setting the Networking and Sharing settings to allow sharing (like I did with Windows 7), I was still unable to access the administrative shares, although I can access things that I share manually. I found that adding the registry QWORD LocalAccountTokenFilterPolicy under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System enabled me to see the administrative shares (the DWORD value didn't help under x64 Windows 8.1), but I was now prompted for a valid user ID and password. But since my user ID and password are the same on both machines, this should work. So something else was going on. According to this: https://4sysops.com/archives/access-denied-to-administrative-admin-shares-in-windows-8/ setting the local security poicy for "User Account Control: Run all administrators in Admin Approval Mode" to disabled should fix this. It did. But now the Windows Store won't open saying that UAC is disabled. How do I reenable the administrative shares on Windows 8.1 and allow access using my common administrative user without disabling the Windows Store? Anyone have any idea?