If your computer is locked up and displaying a message asking you to call a number, it is likely that you are experiencing a tech support scam. Scammers often use scare tactics, such as fake error messages, to trick users into calling a number for unnecessary technical support services.
Here are some steps you can take to address the situation:
- Do not call the number displayed on your screen. Legitimate Microsoft error messages never include a phone number.
- Force close the browser or application that is displaying the message. You can do this by using Task Manager (press Ctrl + Shift + Esc) to end the task.
- Run a full scan with Microsoft Defender Antivirus to check for any malware that may have been installed on your device.
- Uninstall any applications that you may have been instructed to install by the scammers.
- Change your passwords and monitor your accounts for any unusual activity.
- If you provided any personal or financial information, contact your bank or financial institutions immediately.
For more information on how to protect yourself from tech support scams, you can refer to the resources provided by Microsoft.