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If Copilot opens when you sign in to Windows 11, turn it off under Settings > Apps > Startup. If it is missing there, check Task Manager, then the Windows Startup folders. Registry changes are a last resort: identify the exact entry and back up the registry before editing.
First confirm that Copilot is launching at sign-in
A Copilot icon on the taskbar does not by itself mean the app started automatically. Check whether a Copilot window actually opens after you sign in. The taskbar visibility setting and the Copilot-key behavior control how you access Copilot; neither is the same as a Windows startup-app setting. Microsoft documents these controls separately in its Windows startup guidance, Windows keyboard shortcuts guidance, and Copilot access guidance.
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Disable Copilot in Windows startup settings
- Open Settings > Apps > Startup.
- Find Copilot and switch its toggle off.
- Restart Windows and check whether Copilot still opens after sign-in.
Windows exposes startup controls for applications registered with a startup task. Microsoft describes Settings and Task Manager as ways to configure those applications in its startup-app instructions.
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Check Task Manager
- Right-click Start and open Task Manager.
- Select Startup apps.
- If Copilot appears, select it and choose Disable.
- Restart and check the sign-in behavior.
Task Manager shows the registered startup-app list and also provides startup-impact information. Its list is another place to disable a registered entry, not a separate Copilot-specific control.
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Check the Startup folders
A shortcut in a Startup folder can cause an application to open when you sign in, even if you do not see it in the startup-app lists. To inspect the folders:
- Press Win + R, enter
shell:startup, and press Enter. This opens the current user’s Startup folder. - Look for a Copilot shortcut. If you find one, confirm it is the shortcut responsible before removing it.
- To inspect the folder shared by all users, press Win + R, enter
shell:common startup, and press Enter.
Microsoft lists these folders as a way to find startup applications that do not appear in the startup list. See its Windows startup-app guidance.
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Use the registry only if the other checks do not explain the launch
Windows also has startup entries in these documented Run locations:
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- All users:
HKLMSoftwareWow6432NodeMicrosoftWindowsCurrentVersionRun - All users:
HKLMSoftwareMicrosoftWindowsCurrentVersionRun - Current user:
HKCUSoftwareMicrosoftWindowsCurrentVersionRun
Changing the registry can have unintended consequences. Back it up before making changes, and do not delete an entry unless you have identified it as Copilot-related and understand what it does. Microsoft’s startup guidance documents these locations and warns users to take care when editing the registry.
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If Copilot still opens after you disable it
Use the checks above in order: Settings, Task Manager, the current-user Startup folder, the all-users Startup folder, and then the registry Run locations if needed. Restart after changing a startup entry so you can see whether the behavior has changed.
Microsoft’s general guidance notes that a startup entry with a missing or invalid app path can produce the message “We couldn’t find this app.” That indicates a broken path; it does not establish a Copilot-specific cause or explain why a disabled entry might return. The available guidance does not identify one universal reason for that recurrence. Check the actual entry on your device rather than assuming a particular update, account type, policy, or Copilot setting is responsible.
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Keep startup, taskbar, and Copilot-key settings separate
Turning off Copilot’s taskbar visibility changes whether it is shown or accessed from the taskbar; changing the Copilot key changes what that keyboard key does. Those are distinct from disabling automatic launch at sign-in. Microsoft notes that Copilot-key availability and choices can vary with device design, account settings, installed apps, and organization settings. See the Copilot-key settings guidance.
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