I am assuming you don't have the Administrator account activated:
How to Enable the Built-in Administrator in Windows 10 via Recovery Options
Enabling the built-in administrator account can be done through Windows Recovery Environment (aka “Recovery Options”), if Windows doesn’t boot normally or if you’re unable to login to your account.
Note: If a perfectly working Windows 10 computer with an administrator user account already present and working correctly, you won’t have the need to enable the built-in administrator (“Administrator”) account. This article assumes that you’re either unable to start Windows 10 normally, or unable to login to your administrator-level user account for some reason.
For example, here is one situation (lost administrator account password or lost the admin privileges) where you’ll need to activate the built-in administrator account. For more information, check out article Fix: Lost Administrator Rights or Password in Windows 10
(Note: Step 1 is only for those who are able to login to Windows. If can't just go to Step 2.)
- From the sign-in screen in Windows 10, press and hold the SHIFT key on the keyboard.
- With the SHIFT key still pressed, click the Power button and then click Restart.
- In the Recovery Options menu, click Troubleshoot, and then click Advanced Options.
1. In the Advanced options dialog, click Command Prompt.
2. In the Command Prompt window, type the following command and press ENTER:
net user administrator /active:yes
3. Type exit
to return to Recovery Options menu.
4. Exit and Continue to Windows 10.
- When you get to the sign-in screen, hold the SHIFT key down while you select Power icon, and click Restart.
- Your computer restarts to the “Choose an option” screen.
- Select Troubleshoot > Advanced options > Startup Settings > Restart.
- After your computer restarts, you’ll see a list of options. Select 4 or F4 to start your PC in Safe Mode, or select 5 or F5 for Safe Mode with Networking.
- Log in as Administrator from Safe mode.
- Carry out the administration tasks using this account, such as creating a new administrator account or fixing registry or file system permissions etc.
- For security reasons, it’s better to disable it once you finish all your tasks using this account. To disable the built-in Administrator account, open an elevated Command Prompt window and then type:
net user administrator /active:no
That’s it! Use your built-in administrator account very scarcely.
Otherwise just use one of the password wiper programs.
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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