It's definitely a scam, since Microsoft never includes phone numbers in their own valid security notifications, they would never 'lock-up' your computer, and there's no such thing as a threat detected on an IP address.
That locked up browser popup can typically be closed by opening Task Manager one of a number of ways, then highlighting whatever browser you're using in the Apps section of the Processes tab and clicking the End task button on the lower right-hand corner of that same window. Worst case, forcing your device to shut down by pressing the power button used to turn it on for over 5 seconds will usually get rid of it if nothing else seems to work.
Here's Microsoft's official page discussing these Tech Support scams.
Protect yourself from tech support scams - Microsoft Support
Rob
Answer from Rob Koch on answers.microsoft.comMicrosoft Support
support.microsoft.com › en-us › topic › customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
Customer service phone numbers - Microsoft Support
If you already have a volume licensing ... support team. Please note that numbers marked as Toll Free are accessible for local calls only. Numbers marked as Toll are accessible for both local and long-distance calls. Select a region below to find a customer service phone number in your country/territory. ... Explore subscription benefits, browse training courses, learn how to secure your device, ...
Microsoft
info.microsoft.com › ww-landing-security-generic-contact-me.html
Microsoft Security Contact Me
Let’s help you get started with Microsoft Security · Fill out the form and we’ll have a Microsoft Security expert give you a call. Our team can answer your questions, provide expert guidance, and help you understand what Microsoft Security can do for your business
Microsoft
microsoft.com › en-us › security › business › get-started › contact-us
Contact Microsoft Sales | Microsoft Security
A security specialist will reach out to answer your questions and provide expert guidance. ... Call the Microsoft Sales number. Available M-F 6 AM to 6 PM PT. ... Call Microsoft customer service using the phone number for your country or open a Microsoft 365 support ticket.
Microsoft Support
support.microsoft.com › en-us › security
Microsoft security help and learning
Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.
GetHuman
gethuman.com › all companies › microsoft - tech support customer service
Microsoft - Tech Support Customer Service Phone Number 877-696-7786: Call Support
February 23, 2009 - For security reasons, the only way we can assist you with passwords or other sign in issues with your Microsoft account is online." ... "Are you calling about Microsoft three sixty five? If you need help locating the phone number associated with your subscription, let me know."
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 2281727 › computer-locked-up
computer locked up - Microsoft Q&A
My computer was locked by Microsoft because says IP address used to visit website network and identity theft virus. Wants me to call 833-417-3538. I don't know if this is legit. Says call microsoft support - do not restart computer or shut down.
Xbox Support
support.xbox.com › en-US › contact-us
Xbox Support
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Top answer 1 of 4
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It's definitely a scam, since Microsoft never includes phone numbers in their own valid security notifications, they would never 'lock-up' your computer, and there's no such thing as a threat detected on an IP address.
That locked up browser popup can typically be closed by opening Task Manager one of a number of ways, then highlighting whatever browser you're using in the Apps section of the Processes tab and clicking the End task button on the lower right-hand corner of that same window. Worst case, forcing your device to shut down by pressing the power button used to turn it on for over 5 seconds will usually get rid of it if nothing else seems to work.
Here's Microsoft's official page discussing these Tech Support scams.
Protect yourself from tech support scams - Microsoft Support
Rob
2 of 4
79
Odds are pretty high that it's a scam.
But we are not equipped here to make the judgement for you, especially given that the information available is only what you were able to include in the question.
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 4371945 › please-send-me-micro-softs-coustomer-service-numbe
Please send me micro softs coustomer service number. - Microsoft Q&A
Also note that as the chart implies, the initial method typically required to gain access to phone support is by doing Chat with a Call back, while the global support lines are only intended for certain business users who's phone numbers are typically already registered with Microsoft's internal phone support systems and that's the reason direct phone calls to these same numbers will virtually always be rejected and redirected to the online support sites including these Q&A forums.
Microsoft Support
support.microsoft.com › en-us › windows › get-help-for-microsoft-personal-account-users-aaf7f74b-026e-489b-a102-0570dfbfb192
Get Help for Microsoft personal account users - Microsoft Support
Chat with a support agent in your web browser: Confirm your contact information, and a chat window will open to connect you with an agent. Provide your phone number and a support agent will call you: Submit your phone number, and you will receive a confirmation with a request number of your support request.
Microsoft 365
microsoft-365.pissedconsumer.com › customer-service.html
Microsoft 365 Customer Service Phone Number (800) 642-7676, Email, Help Center
2% of the consumers who called the company’s customer support stated that their issues were resolved. ... Rebecca A. Garland ... Microsoft Company has published the toll-free number 1-800-642-7676 to call their customer care team for general ...
Microsoft Support
support.microsoft.com › home › contact
Contact - Microsoft Support
Skip to main content · Microsoft · Support · Cancel · Sign in · Contact Microsoft Support · English (United States) Your Privacy Choices · Your Privacy Choices
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 5496608 › live-support-call-center
live support call center - Microsoft Q&A
Live support call center has no phone number.
Microsoft Support
support.microsoft.com › en-us › contactus
Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Microsoft Learn
learn.microsoft.com › en-us › defender-xdr › contact-defender-support
Contact Microsoft Defender support - Microsoft Defender XDR | Microsoft Learn
To open a service request, select the Contact support. This opens a form where you can provide details about the issue you're facing. Fill in a title and description for the issue you're facing, the phone number and email address where we can reach you.
Microsoft Learn
learn.microsoft.com › en-us › dynamics365 › get-started › support › on-premises-call-us
Contact Microsoft technical support - Dynamics 365 | Microsoft Learn
Technical support is provided in English 24 hours a day, 7 days a week, and in some cases, in local languages as noted. Admins, have your account details ready when you call. The phone numbers in the global phone numbers list also apply to solutions with the following business apps:
Microsoft Learn
learn.microsoft.com › en-us › microsoft-365 › admin › get-help-support
Get support - Microsoft 365 admin | Microsoft Learn
Technical support is provided in English 24 hours a day, 7 days a week, and in some cases, in local languages as noted. Admins have your account details ready when you call. ... To better protect your organization, we added a PIN-based verification step to our existing phone-based verification process. If you contact us from a number that isn't registered with your organization profile, the Microsoft support representative sends a verification code to the registered email or phone number in your Microsoft 365 admin center profile.
Microsoft Support
support.microsoft.com › en-us › windows › protect-yourself-from-tech-support-scams-2ebf91bd-f94c-2a8a-e541-f5c800d18435
Protect yourself from tech support scams - Microsoft Support
Important: Microsoft error and warning messages never include phone numbers. When you engage with the scammers, they can offer fake solutions for your “problems” and ask for payment in the form of a one-time fee or subscription to a purported support service. First, be sure to follow these tips on how to keep your computer secure.
PissedConsumer
microsoft.pissedconsumer.com › customer-service.html
Microsoft Customer Service Phone Number (800) 865-9408, Email, Help Center
How to contact Microsoft customer support at toll-free or headquarters phone number? Call or write an email to [email protected] to resolve Microsoft issues: Account, Product/ Service, Payments and Charges. Visit the company website www.microsoft.com or help center for more information.
PissedConsumer
microsoft-online-store.pissedconsumer.com › customer-service.html
Microsoft Online Store Customer Service Phone Number (877) 696-7786, Email, Help Center
Very frustrating, given that microsoft specializes in IT. ... Calling to get a live agent in pánic mode . Hackers got in to my email account . And was not receiving me emails . ... All SEVEN numbers I called went to automated and referred to online help. Had to log in 3 times, no help at all with online answer choices. MSN has literally NO customer service or support.