Hello Wil, how are you doing?
Welcome to the Microsoft community!
I'm glad to be able to assist you at this time.
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It is strange that you are having trouble disabling a scheduled scan on your laptop, even as an administrator.
First, I recommend running the Windows Troubleshooter. This tool can identify and address any problems with your Windows system. To run the troubleshooter, navigate to Settings > System > Troubleshoot > Other troubleshooters and select the troubleshooter for Scheduled Tasks.
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If the issue persists, try disabling the scheduled scan from an elevated command prompt. To do this, open an elevated command prompt by right-clicking on the Start button and choosing Command Prompt (Admin). In the command prompt, enter the following command and press Enter:
schtasks /change /tn "Scheduled Scan" /disable
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If the problem still persists, you can run the System File Checker tool to scan for and repair any corrupted system files. Open an elevated command prompt and enter the following command, then press Enter:
sfc /scannow
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I hope this helps you.
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