Access denied to Administrative (Admin) shares in Windows 8, 8.1, 10

3 ways to fix:
1. Map Admin Shares with the built-in administrator account
2. LocalAccountTokenFilterPolicy – UAC remote restrictions

To get rid of the Access Denied message, follow this procedure:

1. Launch the Registry editor by typing regedit.exe in the Start Screen.
2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System.
3. Create a new entry by right-clicking System and then selecting DWORD (32-bit) Value.
4. Choose LocalAccountTokenFilterPolicy as name for the new entry.
5. Set the value of LocalAccountTokenFilterPolicy to 1 by right-clicking the new entry.

3. Disable UAC Admin Approval mode

Note: Disabling UAC Admin Approval mode will also disable the Windows Store app.

1. Launch Control Panel, type admin… in the search box, and then click Administrative Tools.
2. Open the Local Security Policy application.
3. Navigate to Local Policies > Security Options.
4. Disable the policy User Account Control: Run all administrators in Admin Approval Mode.

Note: For Windows 11
If you want to configure auto-login, then you need to disable the “only allow Windows Hello sign-in” option using the following steps:

1. Click Start, Settings, and click Accounts.
2. Click on Sign-in options
3. Turn off the radio button under the Require Windows Hello sign-in for Microsoft accounts section.
   The description “For improved security, only allow Windows Hello sign-in for Microsoft accounts on this device (Recommended)” is self-explanatory.

source:
– https://4sysops.com/archives/access-denied-to-administrative-admin-shares-in-windows-8/
– https://www.winhelponline.com/blog/users-must-enter-a-user-name-and-password-to-use-this-computer-missing-windows-10/