The hidden administrative network share (also known as c$ admin share) is not accessible by default in Windows 10. The administrative share is automatically created but can’t be access by browsing to “\\computername\c$” from a machine on a workgroup or home network. In a domain environment the c$ share should already be available. In a workstation or home environment the administrative share can be enabled from the registry.

Enable admin share using the registry

From the computer you’d like to enable the admin share, click Start or Cortana and immediately type “cmd“. From the list of results, right-click Command Prompt and select Run as administrator.
Copy and paste the following command into the Command Prompt window and hit enter. This will create the LocalAccountTokenFilterPolicy REG_DWORD value as 1 in HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\system.
```
REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\system /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f
```
You can now browse to the computer’s admin share using a local administrative account of the machine. For example:
```
\\computername\c$
```