A pop-up says to call technical support
Unexpected browser warnings or unsolicited support calls
When to use this: A pop-up says to call technical support — use these initial checks when this matches your situation. On a work or school device, follow your organization's policies and stop if a setting is managed.
- Do not call the number in the pop-up or install its suggested software.
- Close the tab or browser. If it will not close, seek help through a trusted contact.
- If a caller initiated contact, end the call and independently verify the organization.
- If you gave remote access, credentials or payment information, promptly contact your IT/security team and the relevant account or payment provider through known channels.
Check the result: You stop interacting with the suspected scam and reach verified assistance.
Stop and get help when needed: Do not pay by gift card or cryptocurrency to unlock a computer. Preserve basic incident details, but do not keep interacting with the scammer.
Need hands-on help?: Request DefenderTech support for individualized investigation or changes. We will explain the scope and estimate and ask for authorization before paid work begins. Do not include passwords, recovery keys or verification codes in your request.
Official references: - Microsoft guidance: https://support.microsoft.com/en-us/office/protect-yourself-from-tech-support-scams
Updated 2026-09-30