Windows 10: Changed to Standard account and can't get back to Admin. a/c

Hi,I changed to standard account and can't get back to administrator account to install programs.When I try to run"net user administrator /active:yes" or go to control panel and click"change account" I get a dialogue box for permission to make changes but there is no "Yes",only a "no" option.
Many thanks in advance.

A standard user cannot activate the Administrator account - otherwise any standard user could become an administrator and defeat the entire purpose of having standard accounts.

What accounts show up under members if you open a command prompt or powershell and run:
net localgroup administrators

Code:

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\John>net localgroup administrators
Alias name     administrators
Comment        Administrators have complete and unrestricted access to the computer/domain

Members

-------------------------------------------------------------------------------
Administrator
John
The command completed successfully.

For example, mine shows two user accounts as administrators: Administrator and John.

Welcome to TenForums @Timo

There really ought to be a warning message if you try to demote your last remaining administrator to a standard user - but there isn't, and you're not the first to fall into this trap.

You can recover by enabling the built-in Administrator account. Log in as Administrator (by default it has no password) then promote your account back to an administrator again. Once repaired, you should disable the built-in Administrator. It's too powerful for every day use and may allow malware to bypass the UAC.

Without any admin accounts left, the only way to enable the built-in Administrator account is Option Four in this tutorial.
Enable or Disable Elevated Administrator account in Windows 10

You should think about creating another local account and making it an administrator. Useful for emergency repairs in future.

NavyLCDR said:

A standard user cannot activate the Administrator account - otherwise any standard user could become an administrator and defeat the entire purpose of having standard accounts.

What accounts show up under members if you open a command prompt or powershell and run:
net localgroup administrators

Code:

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\John>net localgroup administrators
Alias name     administrators
Comment        Administrators have complete and unrestricted access to the computer/domain

Members

-------------------------------------------------------------------------------
Administrator
John
The command completed successfully.

For example, mine shows two user accounts as administrators: Administrator and John.

Hello there. I am running into the same issue please help. Thanks

Yann said:

Hello there. I am running into the same issue please help. Thanks

Well, I have the exact same first step to help you as the post you quoted....

I fail to understand why people ask for help on the forums and then don't start with the troubleshooting steps we offer.

What accounts show up under members if you open a command prompt or powershell and run:
net localgroup administrators

You say that "5. and another account I created" is listed under administrators. Can you log into that account? If yes, then log into that account and you can change other accounts to administrators:
Change Account Type in Windows 10 - Windows 10 User Accounts Tutorials

That being said, though.... there should be no way that guest is in the administrators group, I really don't think default account and homegroup should be in in the administrators group either.