"...Another installation is in progress..." error when installing Office

If you see this error message (0-1018-0) when installing Office, the first thing you can try is restarting your computer. Just bookmark this page in case a restart doesn't solve the issue.

We’re sorry, but we could not start your Office installation. Another installation is in progress, please try again later.

If you get the message again, first remove the OfficeClickToRun.exe following the instructions in Step 1 below. Then, continue with the uninstall and reinstall using the easy fix tool, following the instructions in Step 2.

Note: You might not see the OfficeClickToRun.exe file. If you don't see it just go on to the next step to uninstall, and then reinstall Office.

Step 1 - Remove OfficeClickToRun.exe from Task Manager

  1. Press Ctrl + Alt + Delete, select Task Manager, and then select the Details tab (see below).

    Screen shot of the Details tab on Task Manager
  2. On the Details tab, search for a file called OfficeClickToRun.exe. If you see this file, right-click it and then select End Task. Repeat this step if there is more than one instance of this exe file.

    Important: In Windows 7, open the Task Manager by right-clicking the taskbar, and then clicking Start Task Manager. Click the Processes tab to see all processes currently running under your user account and a description of each. Click OfficeClickToRun.exe, and then click End Process.

Step 2 - Uninstall and reinstall Office

Use this easy fix tool to completely uninstall Office from your computer. Then you'll need to reinstall Office.

  1. Click this easy fix button to uninstall and completely clean up your Office installation.

    Easy fix download button indicating an automated fix is available
  2. When prompted, follow the steps specific to your browser to open the tool.


    Do this

    Internet Explorer

    At the bottom of the browser window, select Open to open the O15CTRRemove.diagcab file.

    Select Open to open the O15CTRRemove.diagcab easy fix tool

    If the file doesn’t open automatically, choose Save > Open Folder, and then double-click the file (it should start with "O15CTRRemove") to run the easy fix tool.

    Proceed to step 3.


    In the lower-lower left corner select the o15CTRRemove file and from the drop down, select Show in folder.

    From the dropdown, select Show in folder

    Double-click the download, o15CTRRemove to run the easy fix tool.

    Proceed to step 3.


    Select Save File, and then OK.

    Save O15CTRRemove.diagcab file in Firefox

    In the upper-right browser window, select Show all downloads. In the Library, select Downloads > O15CTRRemove.digicab, and then select the folder icon. Double-click the O15CTRRemove.digicab.

    Proceed to step 3.

  3. The Uninstall Microsoft Office wizard launches. Select Next and follow the prompts.

  4. When you see the Uninstallation successful screen, follow the prompt to restart your computer for the changes to take effect. Select Next.

  5. After restarting your computer, you can try installing Office again.

    For information about signing in to install or reinstall Office, see How to install Office. Complete the steps specific to your version.

    Note: If you’re having trouble signing in, check that you’re using the correct email and password. If you still can’t sign in you may be using a different Office 365 service and have a different sign in location. See Where to sign in to Office 365.

See Also

Uninstall Office 2013, Office 2016, or Office 365 from a PC

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