This 5-minute guide is designed to help Windows 10 users and admins make the most important privacy-related changes right away without having to read lengthy guides here on this site or elsewhere.
I recommend that you read through the rest of the site, but since it may take a while, you may want to make some changes as quickly as possible.
The following settings concentrate on two things: setting Telemetry data collecting to Basic, the lowest available level (unless you run Enterprise, Education or IoT editions of Windows), and turning off features that may display suggestions/advertisement.
October 3, 2018: The guide was updated to incorporate changes made in Windows 10 version 1809, the October 2018 Update.
Use the shortcut Windows-I to open the Settings application.
Settings > Privacy > Diagnostics & feedback
Go to Privacy > Diagnostics.& feedback
Set the diagnostic and usage data level to Basic.
Basic: Send only info about your device, its settings and capabilities, and whether it is performing properly.
Diagnostic data is used to help keep Windows secure and up to date, troubleshoot problems, and make product improvements.
Regardless of whether you select Basic or Full, your device will be equally secure and will operate normally.
Set “Tailored experiences” to off
Let Microsoft offer you tailored experiences based on the diagnostic data setting you have chosen.
Tailored experiences are personalized tips, ads, and recommendations that enhance Microsoft products and services for your needs.
Set Improve inking & typing recognition to off
Send inking & typing data to Microsoft to improve the language recognition and suggestion capabilities of apps and services running Windows.
Settings > Privacy > General
Go to General using the left sidebar.
Set “Let apps use advertising ID to make ads more interesting to you based on your app usage (turning this off will reset your ID) to off.
Set “Show me suggested content in the Settings app” to off.
Settings > Personalization > Lock Screen (only Windows 10 version 1803 and earlier)
Go to Personalization > Lock Screen.
Set “Get fun facts, tips, tricks, and more on your lock screen” to off.
Settings > Personalization > Start
Go to Start using the left sidebar.
Set “Show suggestions occasionally in Start” to off.
Settings > System > Notifications & actions
Go to System > Notifications & actions
Set “get tips, tricks, and suggestions as you use Windows” to off.
Set “Show me the Windows welcome experience after updates and occasionally when I sign in to highlight what’s new and suggested” to off.
Settings > Accounts > Sync your Settings
Go to Accounts > Sync your Settings.
Set “Sync settings” to off, unless you want your settings to sync to the cloud. If you do, disable all data sets on the same page that you don’t require instead.
Settings > Update & Security > Advanced Options > Delivery Optimization
Go to Updates & security > Advanced options > Delivery Optimization
Windows 10 version 1809:
Set “allow downloads from other PCs” to off.
Earlier Windows 10 versions:
Choose how updates are delivered, and set “download Windows updates and apps from other PCs..” to off, and “get updates from Microsoft..” to PCs on my local network.
Open File Explorer.
Select File > Change Folder and Search Options.
Switch to the View tab.
Disable “show sync provider notifications”.