Fix error: Administrative Privileges lost on Windows 10

Description: Fix error: Administrative Privileges lost on Windows 10

Fix error: Administrative Privileges lost on Windows 10 If your Windows 10 computer is experiencing logon failure, or you have an account that is not a member of the Administrators group, and you have a Standard User account, you may have trouble initializing the system software. The system requires administrative access.
I recently upgraded from Windows 7 to 10.  My wife and I had user accounts, and I had administrative privileges.  Recently, my wife's account disappeared, even though her files are on the computer.  In trying to deal with that, I discovered that I had lost administrative privileges, so that I can't make any major changes to my computer.  Any time I try to give administrative approval, I get a box:
User Account Control
Do you want to allow this app to make changes to your PC?
To continue, type an administrator password and then check yes.
The problem is that there is no longer a place to type a password, and the Yes button is grayed out.  When I go to the User Accounts screen through the Control panel, my account is identified as: Local Account and Guest Account.  How can I restore my administrative privileges so that I can get things in order?
Fix error: Administrative Privileges lost on Windows 10

Fix error: Administrative Privileges lost on Windows 10

In safe mode (see how to do it on my other comment) Choose Troubleshoot

Then Advanced Options

Startup Settings

choose restart and then  Press the F4 button on the keyboard

log in as Administrator (no password is usually required...just "continue")

NOW ...and ONLY NOW can you do the command prompt of

net user administrator /active:yes

And lastly at the command prompt type:

net localgroup Administrators (type in your username here) /add

It worked.

I hope this helps some others that are ready to cry! Never never never again will I trust Microsoft upgrades until it has been tested for a while in the market. Never!

Method 2

Press WinKey+ Q, type user accountsand click on the result.

Then select your User Account > Click Manage another account.

In the following window, click Add a user account option.

Now we have to create a local account user. So after clicking Add an account, click Sign in without a Microsoft account (Not recommended), then clickLocal account. Fill the details on the screen so appeared for adding local account. Click Finish when done.

Press Windows Key + Q and type cmd, for the search results, click Command Prompt. Type following command and hit Enter key: shutdown /r /o

The previous step will result your system to boot into Safe Mode. After getting into Safe Mode, press Windows Key + Q, type user accounts, and pick the same from results so appear. You would have now two accounts on your system; first you’re issued admin account and second the local account which you’ve created in step 2. Select local account.

Now click Change the account type link in following window:

Moving on, change the account status from Standard to Administrator. Click Change Account Type.

In this way, the new local account we’ve created has been changed to Administrator. Now you can restart your machine and log into this account with administrator rights. Since you have administrative privileges now; so you can back up your documents from the old administrator account.

Finally, delete the old admin account and switch to Microsoft account to synchronize your settings with new administrative account. Your system will now act normally with full admin rights in your hand.
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