"...Another installation is in progress..." or error code 0-1018 when installing Office

When you try to install Office you may get the following error message, or an error message that contains error code 0-1018:

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

This error can occur if an Office install, update or uninstall was running before you tried to install Office.

Check for an Office icon in the Windows system tray and click it to check the install progress. If an install is already running, wait until it's done before you start your Office install.

If you can't find an Office icon in the system tray, uninstall Office using the easy fix tool, and then reinstall it:

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 Office.

    Easy fix download button indicating an automated fix is available
  2. For the remaining steps showing how to save and use the easy fix, select your browser from the drop-down list below:

    1. 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.

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

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

    4. Restart your computer and then try installing Office again.

    Install Office

    Select the steps for the version you want to install.

    VERSION

    INSTALL STEPS

    Office 365

    Office 2019


    Download and install or reinstall Office on your PC

    Office 2016

    Office 2013


    Download and install or reinstall Office 2016 or Office 2013.

    1. 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.

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

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

    4. Restart your computer and then try installing Office again.

    Install Office

    Select the steps for the version you want to install.

    VERSION

    INSTALL STEPS

    Office 365

    Office 2019


    Download and install or reinstall Office on your PC

    Office 2016

    Office 2013


    Download and install or reinstall Office 2016 or Office 2013.

    1. 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.diagcab, and then select the folder icon. Double-click the O15CTRRemove.diagcab.

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

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

    4. Restart your computer and then try installing Office again.

    Install Office

    Select the steps for the version you want to install.

    VERSION

    INSTALL STEPS

    Office 365

    Office 2019


    Download and install or reinstall Office on your PC

    Office 2016

    Office 2013


    Download and install or reinstall Office 2016 or Office 2013.

See Also

Uninstall Office from a PC

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