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Why Is Microsoft 365 Taking So Long to Install? Fix Slow Setup
Question details
The user is experiencing excessively long wait times or a seemingly stuck progress bar when attempting to install Microsoft 365 on their device.
- Product
- Microsoft 365
- Device & OS
- Windows
- Scenario
- Downloading and installing Microsoft 365 desktop applications onto a computer.
- Observed behavior
- The installation process takes much longer than normally expected, with the setup progress bar moving extremely slowly or appearing to freeze completely.
Ensure your internet connection is stable and that your PC meets the minimum system requirements for Microsoft 365, including having enough free disk space on your primary drive.
Check Network Connection and Restart the Installation
A slow or unstable internet connection is the most common cause of installation delays since Microsoft 365 downloads large files during setup.
Microsoft 365 uses a Click-to-Run installer that streams data from Microsoft's servers in the background. If your connection drops or is throttled, the installation will slow down dramatically or hang.
Close the installer window. If it won't close, open the Task Manager (Ctrl + Shift + Esc) and end the 'Microsoft Office Click-to-Run' background process.
Verify that your computer is connected to a stable and reasonably fast Wi-Fi or Ethernet network. Avoid using metered connections or mobile hotspots for the installation.
Reboot your PC to clear any temporary background processes or cached files that might be conflicting with the setup.
Locate your downloaded Microsoft 365 setup file in your Downloads folder and double-click it to begin the installation process from scratch.
Temporarily Disable Antivirus and Firewall Software
Third-party security software can sometimes actively scan the installation files as they download, significantly slowing down the process.
Use the Microsoft 365 Offline Installer
If your internet connection frequently drops, downloading the offline installer allows you to bypass real-time download issues during setup.
Skip the Heavy Setup with WPS Office
If Microsoft 365 continues to fail or takes too long to install, consider switching to WPS Office. It provides a lightweight, all-in-one suite that installs in seconds and uses minimal system resources while maintaining excellent compatibility with Microsoft file formats.
- 1. Download the lightweight installer: Visit the official WPS Office website and click the free download button to get the setup file.
- 2. Run the quick setup: Open the downloaded file and follow the prompt. The entire installation process typically finishes in less than a minute.
- 3. Open and edit files immediately: Launch WPS Office to instantly start creating new documents or opening your existing Microsoft Office files.
Frequently Asked Questions
How long does it typically take to install Microsoft 365?
On a standard broadband internet connection, it usually takes between 10 to 30 minutes. If the installation exceeds an hour, you likely have an internet connection issue or a system conflict.
Can I use my computer for other tasks while Microsoft 365 is installing?
Yes, but it is highly recommended to close other applications. Running heavy applications during the installation can consume system resources and cause the Office installer to slow down or freeze.
What should I do if the installation is stuck at 90 percent?
A common issue where the installation hangs around 90% is a conflict with the Windows Print Spooler service. You can try restarting the Print Spooler service via the Windows Services app, or simply restart your PC and resume the setup.
Does my Windows version affect the installation speed of Microsoft 365?
Yes. Microsoft 365 requires supported, up-to-date versions of Windows (such as Windows 10 or Windows 11). Running an outdated operating system or pending massive Windows updates can stall the Office installation process.
