Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (2023)

  • Article
  • 7 minutes to read

Applies to

  • Windows 11, version 21H2 and later
  • Windows 10, version 1803 and later


The Diagnostic Data Viewer is a Windows app that lets you review the Windows diagnostic data your device is sending to Microsoft, grouping the info into simple categories based on how it's used by Microsoft.

Install and Use the Diagnostic Data Viewer

You must download the app before you can use the Diagnostic Data Viewer to review your device's diagnostic data.

Turn on data viewing

Before you can use this tool for viewing Windows diagnostic data, you must turn on data viewing in the Settings panel. Turning on data viewing lets Windows store your device's diagnostic data until you turn it off. Turning off data viewing stops Windows from collecting your diagnostic data and clears the existing diagnostic data from your device. Note that this setting does not affect your Office data viewing or history.

To turn on data viewing

  1. Go to Start, select Settings > Privacy > Diagnostics & feedback.

  2. Under Diagnostic data, turn on the If data viewing is enabled, you can see your diagnostics data option.

    Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (1)

Download the Diagnostic Data Viewer

Download the app from the Microsoft Store Diagnostic Data Viewer page.


It's possible that your Windows device doesn't have the Microsoft Store available (for example, Windows Server). If this is the case, see Diagnostic Data Viewer for PowerShell.

Start the Diagnostic Data Viewer

You can start this app from the Settings panel.

To start the Diagnostic Data Viewer

(Video) Windows 11 Privacy Diagnostics and Feedback explained

  1. Go to Start, select Settings > Privacy > Diagnostics & feedback.

  2. Under Diagnostic data, select the Diagnostic Data Viewer button.

    Go to Start and search for Diagnostic Data Viewer.

  3. Close the Diagnostic Data Viewer app, use your device as you normally would for a few days, and then open Diagnostic Data Viewer again to review the updated list of diagnostic data.


    Turning on data viewing can use up to 1GB (by default) of disk space on your system drive. We strongly recommend that you turn off data viewing when you're done using the Diagnostic Data Viewer. For info about turning off data viewing, see the Turn off data viewing section in this article.

Use the Diagnostic Data Viewer

The Diagnostic Data Viewer provides you with the following features to view and filter your device's diagnostic data.

  • View your Windows diagnostic events. In the left column, you can review your diagnostic events. These events reflect activities that occurred and were sent to Microsoft.

    Selecting an event opens the detailed JSON view, which provides the exact details uploaded to Microsoft. Microsoft uses this info to continually improve the Windows operating system.


    Seeing an event does not necessarily mean it has been uploaded yet. It’s possible that some events are still queued and will be uploaded at a later time.

    (Video) How to Enable and Use Diagnostic Data Viewer in Windows

    Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (3)

  • Search your diagnostic events. The Search box at the top of the screen lets you search amongst all of the diagnostic event details. The returned search results include any diagnostic event that contains the matching text.

    Selecting an event opens the detailed JSON view, with the matching text highlighted.

  • Filter your diagnostic event categories. The app's Menu button opens the detailed menu. In here, you'll find a list of diagnostic event categories, which define how the events are used by Microsoft. Selecting a check box lets you filter between the diagnostic event categories.

  • Help to make your Windows experience better. Microsoft only needs diagnostic data from a small amount of devices to make big improvements to the Windows operating system and ultimately, your experience. If you’re a part of this small device group and you experience issues, Microsoft will collect the associated event diagnostic data, allowing your info to potentially help fix the issue for others.

    To signify your contribution, you’ll see this icon (Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (4)) if your device is part of the group. In addition, if any of your diagnostic data events are sent from your device to Microsoft to help make improvements, you’ll see this icon (Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (5)).

  • Provide diagnostic event feedback. The Feedback icon in the upper right corner of the window opens the Feedback Hub app, letting you provide feedback about the Diagnostic Data Viewer and the diagnostic events.

    Selecting a specific event in the Diagnostic Data Viewer automatically fills in the field in the Feedback Hub. You can add your comments to the box labeled, Give us more detail (optional).


    All content in the Feedback Hub is publicly viewable. Therefore, make sure you don't put any personal info into your feedback comments.

  • View a summary of the data you've shared with us over time. Available for users on build 19H1+, 'About my data' in Diagnostic Data Viewer lets you see an overview of the Windows data you've shared with Microsoft.

    Through this feature, you can checkout how much data you send on average each day, the breakdown of your data by category, the top components and services that have sent data, and more.


    This content is a reflection of the history of Windows data the app has stored. If you'd like to have extended analyses, please modify the storage capacity of Diagnostic Data Viewer.

    (Video) How to Configure Windows 11 Privacy Settings

    Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (6)

View Office Diagnostic Data

By default, Diagnostic Data Viewer shows you Windows data. You can also view Office diagnostic data by enabling the feature in the app settings page. To learn more about how to view Office diagnostic data, please visit this page.

Turn off data viewing

When you're done reviewing your diagnostic data, you should turn of data viewing. This will also remove your Windows data history. Note that this setting does not affect your Office data viewing or history.

To turn off data viewing

  1. Go to Start, select Settings > Privacy > Diagnostics & feedback.

  2. Under Diagnostic data, turn off the If data viewing is enabled, you can see your diagnostics data option.

    Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (7)

Modifying the size of your data history

By default, Diagnostic Data Viewer shows you up to 1GB or 30 days of data (whichever comes first) for Windows diagnostic data. Once either the time or space limit is reached, the data is incrementally dropped with the oldest data points dropped first.


Note that if you have Office diagnostic data viewing enabled, the Office data history is fixed at 1 GB and cannot be modified.

Modify the size of your data history

To make changes to the size of your Windows diagnostic data history, visit the app settings, located at the bottom of the navigation menu. Data will be incrementally dropped with the oldest data points first once your chosen size or time limit is reached.


Decreasing the maximum amount of diagnostic data viewable through the tool will remove all data history and requires a reboot of your device. Additionally, increasing the maximum amount of diagnostic data viewable by the tool may come with performance impacts to your machine.

(Video) Windows Privacy Setup

Available on Windows 10 1809 and higher and Windows 11, you can review additional Windows Error Reporting diagnostic data in the View problem reports page within the Diagnostic Data Viewer.

This page provides you with a summary of various crash reports that are sent to Microsoft as part of Windows Error Reporting.We use this data to find and fix specific issues that are hard to replicate and to improve the Windows operating system.

You can also use the Windows Error Reporting tool available in the Control Panel.

To view your Windows Error Reporting diagnostic data using the Diagnostic Data Viewer

Starting with Windows 1809 and higher, you can review Windows Error Reporting diagnostic data in the Diagnostic Data Viewer.

Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (8)

To view your Windows Error Reporting diagnostic data using the Control Panel

Go to Start, select Control Panel > All Control Panel Items > Security and Maintenance > Problem Reports.


Go to Start and search for Problem Reports.The Review problem reports tool opens, showing you your Windows Error Reporting reports, along with a status about whether it was sent to Microsoft.

Diagnostic Data Viewer Overview (Windows 10 and Windows 11) - Windows Privacy (9)

Known Issues with Diagnostic Data Viewer

Microsoft Edge diagnostic data appearing as a blob of text

Applicable to: The new Microsoft Edge (v. 79.x.x.x or higher)

Issue: In some cases, diagnostic data collected and sent from the New Microsoft Edge fails to be translated by the decoder. When decoding fails, the data appears as a blob of text in the Diagnostic Data Viewer. We are working on a fix for this issue.


  • Restart your computer and open Diagnostic Data Viewer.


(Video) What Data Does Windows 10 Send to Microsoft?

  • Restart the DiagTrack service, through the Services tab in task manager, and open Diagnostic Data Viewer.

Background: Some of the diagnostic data collected from the new Microsoft Edge is sent using a Protocol Buffers (protobuf) to reduce network bandwidth and to improve data transfer efficiency. Diagnostic Data Viewer has a decoding capability to translate this protobuf format into human readable text. Due to a bug, sometimes the decoder fails to translate these protobuf messages and hence some of the New Microsoft Edge diagnostic data will appear as a blob of encoded text.


Does Windows 11 have a diagnostic tool? ›

In Windows 11: Go to Start , then select Settings > Privacy & security > Diagnostics & feedback. Make sure that the View diagnostic data setting is turned On, and then select Open Diagnostic Data Viewer.

Should I allow send usage and diagnostic data? ›

Turn Off Usage And Diagnostic Information

This is information that's being sent to Google or Android developers in the background, even when you aren't using your phone. This drains not only battery life, but cellular data.

Does Windows 10 collect personal data? ›

Microsoft collects data to help you do more. To do this, we use the data we collect to provide, improve, and develop our products and services, and to provide you with personalized experiences.

Does Windows 11 have a malware scanner? ›

Windows 10 and 11 include Windows Security, which provides the latest antivirus protection. Your device will be actively protected from the moment you start Windows. Windows Security continually scans for malware (malicious software), viruses, and security threats.

How do I check for malware on Windows 11? ›

Open your Windows Security settings. Select Virus & threat protection > Scan options. Select Windows Defender Offline scan, and then select Scan now.

Why should you turn off usage and diagnostics? ›

Turn usage & diagnostics on or off

Important: If you turn off usage and diagnostics, your device can still get essential services, like a new version of Android. Turning off usage and diagnostics won't affect info that apps might collect.

Why should I turn off nearby device scanning? ›

Review Your Settings and Keep Your Phone Safe

They can also leave you vulnerable to security risks, letting others see your phone's contents without your knowledge. You can avoid this by keeping nearby device scanning turned off. After all, you can turn it back on when you need to with just a few quick taps.

What is Microsoft required diagnostic data? ›

Required diagnostic data is the minimum amount of data that we need to collect in order to keep the product secure, up to date, and performing as expected. For example, if a Microsoft 365 application crashes, certain details about the crash, that help us to diagnose and fix the problem, are collected.

What should I disable in Windows 11? ›

1. Memory Integrity
  1. Open Windows Security by double-clicking that app's system tray icon.
  2. Select the Device Security tab.
  3. Click the Core isolation details navigation option.
  4. Then click Memory Integrity's toggle button to disable that feature.
  5. Restart Windows 11 after turning off Memory Integrity.
Oct 25, 2022

Does Windows 11 keep your data? ›

Upgrading your system from Windows 10 to Windows 11 will not erase all your files. After the update is completed, you should have access to all user files that were previously available in Windows 10.

Does Windows 11 erase all data? ›

Upgrading to Windows 11 doesn't delete any data as long as you click the "Keep personal files and apps" option. If you lose data during the OS upgrading process, turn to EaseUS Data Recovery Wizard.

What data does Windows 11 collect? ›

Windows 11 collects a healthy (or unhealthy) amount of telemetry data collection on your system usage, app use, visited websites, etc. Microsoft also collects your Windows 11 usage statistics through its built-in telemetry system.

What Windows 10 privacy settings should I turn off? ›

Worried about privacy in Windows 10? Here's what you can do.
  • Turn off ad tracking.
  • Turn off location tracking.
  • Turn off Timeline.
  • Curb Cortana.
  • Ditch a Microsoft account for a local account.
  • Change your app permissions.
  • Control and delete diagnostic data.
  • Use Microsoft's Privacy Dashboard.
Nov 7, 2022

How do I make Windows 11 private? ›

You can find Windows 11's privacy settings by opening Settings (WINKEY + I) and navigating to Privacy & security. Here, you will find the privacy options organized under the sections Windows permissions and App permissions, below the Security section.

Is Windows 11 a risk? ›

Windows 11 is worth the update for most people. It comes with a wide range of new features, performance improvements, and design changes. As the latest Windows OS, it usually gets more attention than Windows 10, too. There's not too much risk in upgrading to Windows 11, either.

Does Windows 11 need an antivirus? ›

Yes, we recommend all Windows devices use antivirus software.

Does Windows 11 have good security? ›

Device health is assured with Windows 11, thanks to features such as UEFI Secure Boot and Kernel Data Protection. As such, the OS also ensures out-of-the-box support for remote device attestation; that is, remote verification that any Windows devices connecting to your network are indeed trustworthy.

How do I run a full diagnostic on my computer? ›

To launch the tool, press Windows + R to open the Run window, then type mdsched.exe and hit Enter. Windows will prompt you to restart your computer. The test will take a few minutes to complete. When it's over, your machine will once again restart.

How do I run a memory diagnostic on Windows 11? ›

For Windows 10 and 11, right-click the Start icon and choose Run or click the Search icon, enter mdsched and press enter (Figure A). Image: Scott Matteson/Tech Republic. Select Restart Now And Check For Problems or select Check For Problems The Next Time I Start My Computer.

How do I run a performance test in Windows 11? ›

Press Windows key + R to open the Run dialog. In Run, type perfmon and click OK. The Performance Monitor utility will launch—select Performance Monitor from the list on the left and view real-time performance stats.

How do I diagnose my computer problems? ›

Select Start > Settings > Update & Security > Troubleshoot, or select the Find troubleshooters shortcut at the end of this topic. Select the type of troubleshooting you want to do, then select Run the troubleshooter. Allow the troubleshooter to run and then answer any questions on the screen.

Why might you run a diagnostics check on your computer? ›

Computer diagnostic tools can be used scan your computer's hard drive, check your ram for errors, check cpu temp and give you information about any other devices connected to your computer. These tools are made to find problems that may be disrupting your computer's normal performance.

Should I send diagnostic data to Microsoft full or basic? ›

Full just gives them more data on usage and potentially crashes to help them improve the product. The downside is they have more detailed usage data from you. So, it's just a matter of how much info you want to give them.


1. Windows Diagnostic Data Viewer is phoning home with your private data
2. How to Make Windows 11 Completely Private
3. How to Turn Diagnostic Data Settings On or Off in Windows 11
4. Disable Diagnostic Data Viewer in Windows 11
5. Windows 10 Controversy series Diagnostics data that can not be turned off
(Windows, computers and Technology)
6. Learn How to Change the Diagnostics & Feedback Settings in Windows 11: A Training Tutorial
Top Articles
Latest Posts
Article information

Author: Prof. An Powlowski

Last Updated: 12/09/2022

Views: 6433

Rating: 4.3 / 5 (44 voted)

Reviews: 83% of readers found this page helpful

Author information

Name: Prof. An Powlowski

Birthday: 1992-09-29

Address: Apt. 994 8891 Orval Hill, Brittnyburgh, AZ 41023-0398

Phone: +26417467956738

Job: District Marketing Strategist

Hobby: Embroidery, Bodybuilding, Motor sports, Amateur radio, Wood carving, Whittling, Air sports

Introduction: My name is Prof. An Powlowski, I am a charming, helpful, attractive, good, graceful, thoughtful, vast person who loves writing and wants to share my knowledge and understanding with you.