How to restore administrator rights to my account.

Regain access to the existing administrator account first; if no administrator credentials can be recovered, Safe Mode may permit an account-membership repair, but otherwise Windows recovery or reset is required.

1. Try the existing administrator account

At the sign-in screen, select the other administrator account and attempt to sign in.

• If it uses a Microsoft account, recover or reset that Microsoft account’s password, then reconnect the PC to the internet and try signing in again.
• If it is a local account, use any password-reset questions or reset disk offered on the sign-in screen.
• If you can sign in, create a replacement administrator:
  1. Open Settings > Accounts > Other users.
  2. Select Add account.
  3. After adding the account, expand it and select Change account type.
  4. Select Administrator, then OK. These are Microsoft’s documented account-management steps.^1^

Since the normal Accounts and User Accounts controls are already blocked under your current account, do not repeat them unless you successfully sign in with administrative credentials.

2. Enter Windows Recovery Environment and test the Safe Mode repair

An ordinary restart does not display recovery options. Use one of these documented methods:

• Hold Shift while selecting Power > Restart.
• Or open Settings > System > Recovery, then select Restart now beside Advanced startup.
• If neither works, interrupt startup twice: when the Windows or manufacturer logo appears, hold the power button until the PC shuts down. Repeat once, then start it a third time. Windows should display Automatic Repair > Advanced options.^2^

If BitLocker is enabled, recovery tools may request the BitLocker recovery key.

Then:

1. Select Troubleshoot > Advanced options > Startup Settings > Restart.
2. After restarting, choose 4 — Enable Safe Mode.^3^
3. Sign in and press Windows+R.
4. Enter netplwiz.
5. Select your account, then Properties > Group Membership > Administrator > Apply > OK.
6. Restart normally.

This was an accepted recommendation for a similar Windows 11 case where the computer reportedly had no administrator account.^4^ However, Safe Mode does not automatically elevate a standard account. This method only works if Windows supplies administrative authorization and allows the group-membership change. If credentials are requested, the controls remain disabled, or the change is rejected, stop there.

3. If Advanced options still never appears

On another working PC, create Windows installation media, boot the affected PC from it, and select:

1. Language and keyboard options, then Next.
2. Repair my PC.
3. Next to enter Windows Recovery Environment.^2^

You may need the computer manufacturer’s boot-menu key or instructions to start from USB.

4. Recovery options when no administrator account is usable

Once inside Windows Recovery Environment:

• System Restore is worth trying only if administrator access disappeared after a recent system or account-configuration change and a restore point exists from before that change. It rolls back system files and settings but is not guaranteed to restore account group membership.
• If no usable administrator credentials remain, Reset this PC is the last-resort supported option. Select Troubleshoot > Reset this PC. Back up accessible files first and verify that you have the BitLocker recovery key. Reset reinstalls Windows; even less-destructive recovery choices can remove installed applications or settings, while full reset/reinstall options can remove personal data.^5^

If this is managed by an employer or school, contact its IT administrator instead of resetting it; organizational policy may control the local administrator accounts and recovery options.

References

1. Manage User Accounts in Windows
2. Windows recovery environment | Microsoft Support
3. Windows startup settings | Microsoft Support
4. disabled administration rights but now unable to restore it - Microsoft Q&A
5. Recovery options in Windows | Microsoft Support