This topic provides solutions for common errors you might see when you run Office 365 desktop setup. You use Office 365 desktop setup to install updates that enable your current desktop applications, such as Outlook 2007 or Outlook 2010, to work with Microsoft 365.
I want to get help with these errors or issues
You have a connection to the Internet, but the updates are not downloading
Office 365 desktop setup uses the Windows Installer Service to download installation packages (also known as MSI files) for installing updates. Office 365 desktop setup may fail to download future updates if the Automatically Detect Settings option is not selected in your Internet Explorer settings. To enable automatic setting detection, use the following steps:
In your browser, click the Tools icon, and then click Internet options.
In the Internet options dialog box, click the Connections tab, and then click LAN settings.
In the Local area network (LAN) settings dialog box, select the Automatically detect settings check box, and then click OK.
If you continue to experience problems with updates not downloading, you may need to update your proxy server address. To do this, in the Local area network (LAN) settings dialog box, under Proxy server, select Use a proxy server for your LAN, and then enter a valid proxy server address (you can get this from your administrator).
Note: If you are not using Internet Explorer as your browser, refer to your browser’s help documentation to download MSI files.
You do not have a compatible desktop program or operating system
If you receive an error message that says you are not running the correct version of a specific desktop application or Windows operating system, you need to upgrade to the required version. To find out which Office desktop applications and operating systems work with Microsoft 365, see Software requirements for Office 365 for business.
You stopped the installation before it could finish
If you stop the installation process before it completes, only some of the required updates may be installed. In this case, we recommend that you run Office 365 desktop setup again to finish installing any remaining updates that are required to connect to and use Microsoft 365. For the desktop setup procedure, see Use my current Office desktop apps with Office 365 .
During the installation, you lost connection to the Internet
If your computer loses the connection to the Internet during the installation process, you can run Office 365 desktop setup again after you regain a connection. To restart the process, see Use my current Office desktop apps with Office 365 .
An update could not be installed because another required update failed
Some of the updates are prerequisites for other updates. If a prerequisite update fails to install, any dependent updates will also fail during the installation process. To fix this issue, we recommend that you run Office 365 desktop setup again. See Use my current Office desktop apps with Office 365.
You do not have enough space on your hard disk
Before Office 365 desktop setup installs the updates that you need, it checks to see if your hard disk has enough space to complete the installation process. If your hard disk does not have enough space, you must free some space before you can continue with the installation process.
If you are using Windows, you can run the Disk Cleanup tool. Disk Cleanup removes temporary files, empties the Recycle Bin, and removes a variety of system files and other items that you no longer need. You can choose to delete some or all of the files. To run the Disk Cleanup tool, click Start, and then in the Search programs and files box, type cleanmgr, and press Enter. After disk cleanup is completed, start Office 365 desktop setup again.
One of the service updates is not compatible with your version of Windows
If you receive an error message that says an update is not compatible with your version of Windows, you should upgrade to one of the versions that is compatible with Microsoft 365. For a list of supported operating systems, see Software requirements for Office 365 for business.
Your computer requires an update to the Windows Installer Service
The Windows Installer Service is a required component of Office 365 desktop setup. You must be running the latest version of the service to complete these installations. If you do not have the latest version of the Windows Installer Service, you can download the latest version from the Microsoft Download Center.
If you continue to receive an error message, contact your system administrator for assistance.
Configuration of Microsoft Outlook fails when Outlook is running
If Outlook is running while Office 365 desktop setup is attempting to configure Outlook, the configuration will fail. To correct this issue, close Outlook and run Office 365 desktop setup again.
Your account does not have the necessary permissions to complete desktop setup
If you receive a message that says that an administrator is required to install updates for your computer, your user account does not have the necessary permissions to complete the desktop setup. Because the updates must be installed before Office 365 desktop setup can configure your desktop applications, you must contact your system administrator for assistance. After the updates have been installed, you can sign in to your account and run Office 365 desktop setup to configure your desktop applications.
You tried to create a log but were unable to do so
If you tried to create a log but were unable to do so because an error occurred, contact your system administrator for assistance.