Security

How to Stop Windows 11 Sending Your Data to Microsoft (and Why You Should Care)

Microsoft's Default Settings vs. Your Right to Privacy: Pick a Side

Windows 11, out of the box, sends a staggering amount of your personal data to Microsoft — your location, browsing habits, app usage, typed text, and even voice input — unless you manually turn it off. This isn't a conspiracy theory. It's written right there in Microsoft's own privacy policy, buried in language designed to make your eyes glaze over. The question isn't whether it's happening. The question is: are you going to let it keep happening, or are you going to do something about it?

We're going to put two realities head-to-head: Windows 11 with default "out-of-the-box" settings versus Windows 11 locked down with manual privacy controls. Same operating system. Completely different levels of exposure. Let's walk through what actually changes, criterion by criterion, so you can make an informed decision — not a lazy one.

What We're Comparing

• Option A — Default Windows 11: Everything switched on as Microsoft ships it. Telemetry, Cortana, advertising ID, location, diagnostic data — all running in the background, all feeding Redmond's servers.
• Option B — Privacy-Hardened Windows 11: Manual changes made through Settings, Group Policy, and a couple of free tools. Still Windows 11. Still works. Just not broadcasting your life to a corporation in Washington state.

The Criteria We'll Use

• What data is actually collected
• Performance and system impact
• Ease of locking it down
• What you "lose" by opting out
• Real-world risk if you do nothing

What Data Is Actually Collected

Default Windows 11 collects data in two tiers Microsoft calls "Required" and "Optional" — but calling the first tier "required" is pure corporate sleight of hand. Required diagnostic data includes your device ID, hardware specs, crash reports, and software inventory. Optional diagnostic data adds browsing history (via Edge), search queries, app interactions, typed text samples, and inking data. On top of that, Cortana, Location Services, the Advertising ID, and "Tailored Experiences" all pile on their own data streams. You're not a customer. You're a product.

Privacy-Hardened Windows 11 lets you cut almost all of this. Go to Settings → Privacy & Security → Diagnostics & Feedback and set diagnostic data to "Required" only — then disable "Improve inking and typing," "Tailored experiences," and "View diagnostic data." Then hit Privacy & Security → General and kill the Advertising ID. Then Privacy & Security → Location — turn it off globally or per-app. Repeat for Camera, Microphone, Contacts, and Calendar access. Every one of these is a toggle. None of them breaks Windows.

Verdict on data collection: Default Windows 11 is a firehose pointed at Microsoft. Hardened Windows 11 reduces it to a drip — mainly crash reports you'd actually want them to have anyway.

Performance and System Impact

Default Windows 11 runs telemetry services, the Connected User Experiences and Telemetry service (DiagTrack), and a queue of background tasks that periodically package up your usage data and phone home. On an older machine — the kind most of our clients on the Costa Blanca are running — this creates measurable background CPU and disk activity. It's not catastrophic, but it's not zero either. On a 5-year-old laptop with a mechanical hard drive, you'll feel it.

Privacy-Hardened Windows 11 gives you back some of those resources. Disabling telemetry and killing unnecessary background services means fewer processes competing for your RAM and disk. Using a free tool like O&O ShutUp10++ (genuinely free, no install required, made by a German software company with a solid reputation) lets you toggle dozens of privacy settings in one place and also disables several background tasks you'd never find manually. Many of our clients notice their machine feels slightly snappier after a privacy cleanup — not because we did anything magic, but because we stopped Windows from doing unnecessary work.

Verdict on performance: Hardened Windows 11 wins. Fewer background processes, marginally better performance, especially on older hardware. Default settings cost you resources as well as privacy.

Ease of Locking It Down

Default Windows 11 is easy in the worst possible way: you do nothing and Microsoft gets everything. The setup wizard during installation is designed to push you through with "Accept All"-style momentum. Most people click "Next" until it stops asking. That's exactly what Microsoft is counting on.

Privacy-Hardened Windows 11 takes about 30–45 minutes the first time if you're doing it properly. Here's a practical checklist:

• Settings → Privacy & Security → General: Turn off all four toggles (Advertising ID, suggested content, app launches tracking, settings suggestions).
• Diagnostics & Feedback: Required only. Disable tailored experiences. Disable diagnostic data viewer.
• Location, Camera, Microphone, Contacts, Calendar: Disable globally or audit per-app. Ask yourself: why does your PDF reader need your microphone?
• Activity History: Turn off. This logs everything you do on your PC.
• Search Permissions: Disable SafeSearch cloud integration and search history.
• Microsoft Edge: Switch search engine to DuckDuckGo. Disable personalised ads, "improve search" data sharing, and browsing history sync if you don't need it.
• O&O ShutUp10++: Download, run as administrator, apply the "Recommended" settings as a starting point. Review the rest manually.
• Windows Update: Go to Advanced Options and disable "Receive updates for other Microsoft products" if you want tighter control over what phones home.

Verdict on ease: Default wins on laziness. Hardened wins on actual results. If you can set up a router or configure a printer, you can do this. If you can't — or you'd rather spend your afternoon on the beach instead of fighting Windows menus — call us and we'll do it for you in a single visit.

What You "Lose" by Opting Out

This is where Microsoft would love you to stop reading. The implied threat is: turn off our data collection and things stop working. That's largely a myth.

Default Windows 11 gives you "personalised" ads, "tailored" Cortana suggestions, and Start Menu recommendations based on your behaviour. If those sound like features you want, this is your option.

Privacy-Hardened Windows 11 means:

• No personalised ads (good)
• Cortana becomes less "helpful" — mostly irrelevant for anyone not using it anyway
• Microsoft can't pre-fill your habits into new features — again, most people won't notice
• Crash feedback to Microsoft is reduced — but Windows still updates, still patches, still runs
• Some Microsoft Store app features may nag you for permissions you've revoked — you can grant them per-app when needed

Verdict on what you lose: Almost nothing practical. The "features" you lose are features designed to benefit Microsoft, not you. Targeted ads are not a feature. They are a surveillance monetisation model with a friendly UX.

Real-World Risk If You Do Nothing

Here's what your data is actually used for — and why this matters more than Microsoft's reassuring language suggests:

• Advertising profiling: Your Advertising ID links your activity across Microsoft services and third-party partners. That's not hypothetical — it's the documented purpose of the ID.
• Behavioural data sold to partners: "Trusted partners" is a category in Microsoft's privacy policy. You don't get to vet them.
• Government data requests: Microsoft receives thousands of government data requests per year. Data they don't hold, they can't hand over.
• Data breach exposure: Every piece of data stored remotely is one breach away from being public. Microsoft has been breached. Major cloud providers get hit regularly. Less data stored = less exposure.
• GDPR relevance for EU residents: If you're living on the Costa Blanca — whether you're a British expat, a Dutch retiree, or a local Spanish business owner — you have rights under GDPR. Microsoft's data collection practices have faced regulatory scrutiny in the EU. Exercising your opt-outs is exercising your legal rights.

Verdict on risk: Default settings create unnecessary, ongoing exposure. There is no scenario where a home user or small business on the Costa Blanca benefits more from Microsoft having their data than from keeping it private.

Who Should Choose Which Option

Stick with Default Windows 11 if: You work exclusively inside the Microsoft 365 ecosystem for enterprise compliance reasons, your IT department mandates it, or you genuinely use Cortana and personalised Microsoft features daily. This applies to almost nobody reading this article.

Go with Privacy-Hardened Windows 11 if: You're a home user, a freelancer, a small business owner, an expat who'd rather Microsoft not know which town on the Costa Blanca you're searching from, or literally anyone who doesn't need their operating system reporting their behaviour to a corporation. That's the overwhelming majority of people.

Verdict: Lock It Down. Full Stop.

This isn't a close call. Default Windows 11 privacy settings exist to serve Microsoft's revenue model, not your security. The hardened version of the same operating system works just as well for 99% of tasks, and it stops treating you like a data point in someone else's quarterly report.

Spend 45 minutes this weekend going through your Privacy & Security settings. Download O&O ShutUp10++. Switch your default browser search to DuckDuckGo. If you want someone to do it properly, in one shot, with a full audit of what was running on your machine — that's exactly what we do at Campoverde Repair. One visit. Done right. No upsells.

Your data belongs to you. Windows just forgot that somewhere between 2015 and now.

Key Takeaways

• Windows 11 defaults collect your location, browsing habits, app usage, and typed text — all opt-out, never opt-in.
• 30–45 minutes in Settings and with O&O ShutUp10++ cuts the vast majority of data collection without breaking any core Windows functionality.
• The "features" you lose by opting out are features designed to benefit Microsoft, not you — targeted ads and behavioural profiling are not user features.
• Less data held remotely means less exposure in a breach and less handed over in government data requests.
• EU residents including Costa Blanca expats have GDPR rights — opting out of Microsoft's data collection is exercising those rights, not paranoia.

Photos via Pexels