Follow these steps to determine your installation type.

1. Create or open an existing file.
   
   
2. Select File > Account (or it might say Office Account).
   
   
3. Under Product information, find the About button and check for the following:
   
   

   Type of Installation	Listed information
   Click-to-Run installations	Version, Build Number, and Click-to-Run
   MSI installation	About Office
   Microsoft Store installations	Version, Build number, and Microsoft Store

Follow these steps to remove any Windows Installer packages.

1. Find the Office 16 installation folder, located in C:\Program Files\.
   
   
2. Right-click the Microsoft Office 16 folder and select Delete.

Follow these steps to remove the scheduled tasks for MS Office.

1. Open the Command Prompt window as an administrator.
   
   
2. At the command prompt, type the following commands and press Enter after each one:
   • schtasks.exe /delete /tn "\Microsoft\Office\Office Automatic Updates"
   • schtasks.exe /delete /tn "\Microsoft\Office\Office Subscription Maintenance"
   • schtasks.exe /delete /tn "\Microsoft\Office\Office ClickToRun Service Monitor"
   • schtasks.exe /delete /tn "\Microsoft\Office\OfficeTelemetryAgentLogOn2016"
   • schtasks.exe /delete /tn "\Microsoft\Office\OfficeTelemetryAgentFallBack2016"

Follow these steps to stop Click-to-Run tasks.

1. Open Task Manager. (The process depends on your version of Windows)
   
   • Windows 10: Right-click Start and click Task Manager. (The keyboard shortcut, "Windows logo key + X" also works to open the access menu.)
   • Windows 8 or 8.1: Point to the upper-right corner of the screen, move the mouse pointer down, and then click Search. Type Task Manager in the search box, and then click Task Manager in the results.
   • Windows 7: Right-click an empty area of the taskbar, and then click Start Task Manager.
     
     
2. Click on the Process tab.
   
   
3. If the following processes are running, right-click each one, and then click End task in Windows 10, End Task in Windows 8 or 8.1, or End Process in Windows 7 after you select each process.
   • OfficeClickToRun.exe
   • OfficeC2RClient.exe
   • AppVShNotify.exe
   • setup*.exe

Open the Command Prompt window as an administrator, type sc delete ClickToRunSvc, and then press Enter.

Follow these steps to delete Office files.

1. Press the Windows logo key + R to open the Run dialog box.
   
   
2. In the Open box, type %ProgramFiles%, and then click OK.
   
   
3. Delete the "Microsoft Office 16" folder.
   
   
4. Delete the “Microsoft Office” folder.
   
   
5. Open the Run dialog box, type %ProgramFiles(x86)%, and then click OK.
   
   
6. Delete the “Microsoft Office” folder.
   
   
7. Open the Run dialog box, type %CommonProgramFiles%\Microsoft Shared and then click OK.
   
   
8. Delete the “ClickToRun” folder.
   
   
9. Open the Run dialog box, type %ProgramData%\Microsoft, and then click OK.
   
   
10. Delete the ClickToRun folder. If the folder does not exist, go to the next step.
    
    
11. Open the Run dialog box, type %ProgramData%\Microsoft\Office, and then click OK.
    
    
12. Delete the ClickToRunPackagerLocker file.
    

If you cannot delete an open folder or file being used by another program, restart the computer, and then try again. If you still can't remove the folder, go to the next step.

It is important to follow the steps in this section carefully. Serious problems may occur if you change the registry incorrectly. Before you start, back up the registry for restoration in case problems occur.

1. Open Registry Editor.
   • Windows 10: Right-click Start, click Run, type regedit, and then click OK.
   • Windows 8 or 8.1: Right-click Start, click Run, type regedit, and then click OK.
   • Windows 7: Click Start, type Run in the Start Search box, and then click Run in the results.
     
     
2. Delete the following registry subkeys:
   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun
   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppVISV
   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Office <Edition> - en-us
   • HKEY_CURRENT_USER\Software\Microsoft\Office
     
     
3. Delete the Office key.

In the subkey in the third bullet item, "Microsoft Office <Edition>- en-us" represents the actual program name. The name depends on the Office 2016 edition and the language version that you installed.

Follow these steps to delete the Start Menu shortcuts.

1. Open the Command Prompt window as an administrator.
   
   
2. Type %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs, and then press Enter.
   
   
3. Delete the “Microsoft Office 2016 Tools” folder.
   
   
4. Delete each of the “<application> 2016” shortcuts for each of the Office 2016 applications. For example, “Word 2016”, “Excel 2016”, “PowerPoint 2016”.

Follow these steps to uninstall extensibility and localization components.

1. Open the Command Prompt window as an administrator.
   
   
2. At the command prompt, type the command that is appropriate for your operating system, and then press Enter:
   • If you're running an x86 version of Office 2016 on an x64 operating system, run the following commands:
     • MsiExec.exe /X{90160000-008F-0000-1000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0000-0000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0409-0000-0000000FF1CE}
       
       
   • If you're running an x86 version of Office 2016 on an x86 operating system, run the following command:
     • MsiExec.exe /X{90160000-007E-0000-0000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0000-0000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0409-0000-0000000FF1CE}
       
       
   • If you're running an x64 version of Office 2016 on an x64 operating system, run the following command:
     • MsiExec.exe /X{90160000-007E-0000-1000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0000-1000-0000000FF1CE}
     • MsiExec.exe /X{90160000-008C-0409-1000-0000000FF1CE}