Fix Timeline Not Working in Windows 10

If your Windows 10 Timeline (the task view feature that shows your past activities and lets you resume them) has stopped working, the fix usually starts with checking the Activity History settings and restarting the associated Windows services. Follow the steps below to get Timeline back on track, and then use the troubleshooting sections if the basic fix doesn’t solve it.

What Is Timeline in Windows 10?

Timeline was introduced in the Windows 10 April 2018 Update (version 1803). It builds on the older Task View feature, which showed only open windows. Timeline adds a scrollable history of activities—documents you opened, websites you visited in Edge, and apps you used—organized by time. You can reopen a past activity by clicking it, which can save time if you frequently switch between projects. Timeline syncs across devices signed in with the same Microsoft account, so you can pick up where you left off on another PC.

Timeline relies on a feature called Activity History, which is stored locally on your device and optionally synced to the cloud. When Timeline stops working, it’s usually because Activity History is disabled, the related Windows services are not running, or a corrupted cache is preventing the feature from loading.

Why Timeline Stops Working

Several factors can cause Timeline to fail, and identifying the root cause helps you choose the right fix:

• Activity History is turned off – This is the most common cause. If the setting is disabled, Windows stops recording new activities, and Timeline shows nothing or an error.
• Windows services are stopped – Timeline depends on the “Connected User Experiences and Telemetryâ€� service (also known as DiagTrack) and the “Diagnostic Policy Service.â€� If these are disabled (often by privacy tweaks or third-party optimization tools), Timeline cannot function.
• Corrupted cache files – The local Activity History cache can become corrupted, causing Timeline to hang or crash.
• Group Policy restrictions – On Windows 10 Pro or Enterprise, an administrator may have disabled Activity History via Group Policy.
• Sync issues – If you rely on cross-device sync, a problem with your Microsoft account or the sync settings can make Timeline appear empty.

How to Fix Timeline: Step-by-Step

Start with these steps in order. They address the most common causes first.

1. Enable Activity History

1. Open Settings (Windows key + I).
2. Go to Privacy > Activity history.
3. Check the box “Let Windows collect my activities from this PC.�
4. If you want to sync across devices, also check “Let Windows sync my activities from this PC to the cloud.�
5. Below that, you’ll see a list of accounts. Make sure your Microsoft account is checked.
6. Click Clear to delete the existing history, then restart your PC. This clears any corrupted cache.

After restarting, open Task View (Windows key + Tab) to see if Timeline is working. If not, move to the next step.

2. Restart the Required Windows Services

Timeline depends on two services. If they are disabled, re-enable them:

1. Press Windows key + R, type services.msc, and press Enter.
2. Find Connected User Experiences and Telemetry (DiagTrack).
3. Right-click it and select Properties.
4. Set Startup type to Automatic (Delayed Start).
5. If the service is not running, click Start.
6. Repeat for Diagnostic Policy Service – set it to Automatic and start it.
7. Restart your PC.

Note: Some privacy guides recommend disabling DiagTrack to reduce telemetry. If you have done that, re-enable it for Timeline to work. You can still limit telemetry through the Privacy settings without disabling the service entirely.

3. Check Group Policy (Windows 10 Pro/Enterprise)

If Activity History is greyed out or won’t stay enabled, a Group Policy may be overriding it.

1. Press Windows key + R, type gpedit.msc, and press Enter.
2. Navigate to Computer Configuration > Administrative Templates > System > OS Policies.
3. Double-click “Allow activity feed� and set it to Not Configured or Enabled.
4. Also check “Allow publishing of user activities� and set it to Not Configured or Enabled.
5. Click OK and restart.

If you are on Windows 10 Home, Group Policy Editor is not available by default. You can skip this step.

4. Reset Timeline Cache

If Timeline still shows nothing or crashes, the cache files may be corrupted. You can delete them manually:

1. Open File Explorer and navigate to:
   %LocalAppData%\ConnectedDevicesPlatform
2. Select all folders inside and delete them. (These are per-account cache folders.)
3. Also go to %LocalAppData%\Microsoft\Windows\Timeline and delete its contents.
4. Restart your PC. Windows will recreate these folders.

This clears all local Timeline data, but your synced activities may reappear after a few minutes if cloud sync is on.

5. Run the Windows Store Apps Troubleshooter

Timeline is tied to the Microsoft Store and UWP apps. If the issue persists, run the built-in troubleshooter:

1. Go to Settings > Update & Security > Troubleshoot.
2. Click Additional troubleshooters.
3. Select Windows Store Apps and run it.

This can fix corrupted app permissions or missing dependencies.

How to Use Timeline Effectively

Once Timeline is working, you can use it to jump back to recent activities:

• Press Windows key + Tab to open Task View. You’ll see current windows at the top and a timeline of activities below, grouped by day.
• Scroll down to see activities from earlier days or weeks.
• Click any activity to open the app with that specific document or webpage.
• Use the search bar at the top of Task View to find a specific activity by name.
• To stop an activity from appearing, right-click it and select Remove.
• To clear all history, go to Settings > Privacy > Activity history and click Clear.

Note that Timeline only records activities from apps that support it. Traditional Win32 desktop apps may not appear unless they are updated to integrate with Windows’ activity APIs. Microsoft Edge, Office apps, and many Store apps work well.

Common Problems and Misconceptions

“Timeline shows nothing after I cleared history.� That’s expected. You need to use your apps for a while before new activities appear. If you cleared the cache, it may take a few hours of usage to rebuild.

“My activities don’t sync across devices.� Sync requires you to be signed in with the same Microsoft account on both devices, and the “Let Windows sync my activities� setting must be enabled on the source device. Also, the target device must have the same setting enabled. If you use a local account, sync is not available.

“Timeline is a privacy risk.� Many users worry about Microsoft collecting activity data. You can disable the cloud sync and still use Timeline locally. You can also clear history at any time. If you want no data collected at all, you must disable Activity History entirely, which disables Timeline.

“Timeline doesn’t work on Windows 11.� That’s correct – Microsoft removed Timeline from Windows 11. This article applies only to Windows 10.

Frequently Asked Questions

Why is my Timeline greyed out in Task View?

This usually happens when Activity History is disabled or the required services are stopped. Re-enable Activity History in Settings > Privacy > Activity history, and ensure the Connected User Experiences and Telemetry service is running. If you’re on a managed PC, check Group Policy.

Will disabling telemetry break Timeline?

Yes, if you disable the Connected User Experiences and Telemetry service entirely. You can reduce telemetry through the Privacy settings (e.g., set diagnostic data to “Basic�) without stopping the service, and Timeline should still work. However, some advanced telemetry settings may still affect it.

How do I clear only one activity from Timeline?

Open Task View, scroll to the activity you want to remove, right-click it, and select Remove. This deletes that single entry from the local timeline. If you have sync enabled, it may reappear on other devices.

Can I use Timeline without a Microsoft account?

Yes, you can use Timeline locally without a Microsoft account. Just enable “Let Windows collect my activities from this PC� and leave the cloud sync option unchecked. You won’t be able to sync across devices, but the local timeline will work.

Why do some apps not show in Timeline?

Apps must be written to use the Windows Activity API. Many older desktop apps don’t support it. Microsoft Edge, Office, and most Store apps do. If a specific app is missing, check if it has an update that adds Timeline support.

Timeline still not working after all steps – what else can I try?

Try creating a new local user account and check if Timeline works there. If it does, the issue is with your user profile. You can also run sfc /scannow in an elevated Command Prompt to repair system files. As a last resort, consider resetting Windows 10 while keeping your files.

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