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How to Fix Microsoft 365 Apps Not Opening (Online Repair)
Question details
Microsoft 365 Personal applications abruptly stopped opening after functioning normally for an extended period.
- Product
- Microsoft 365 Personal
- Device & OS
- Windows
- Scenario
- Launching Microsoft Office applications such as Word, Excel, or Outlook for daily tasks.
- Observed behavior
- The applications fail to open completely, and standard quick repair attempts do not resolve the issue.
Ensure you have a stable internet connection, as the Online Repair tool needs to download a fresh set of installation files from Microsoft's servers to complete the fix.
Perform an Online Repair via Control Panel
Use this method when standard or quick repair options fail to restore functionality to your Microsoft 365 applications.
The Online Repair process is highly effective for deep-rooted software corruption. Unlike a Quick Repair, it completely uninstalls the current Office suite and downloads fresh installation files directly from Microsoft, which usually resolves persistent launch failures.
Click the Start menu, type 'Control Panel' in the search bar, and press Enter to launch the application.
Under the 'Programs' category, click on the 'Uninstall a program' link to view all installed applications on your computer.
Scroll through the list to find 'Microsoft 365 Apps' (or Microsoft 365 Personal). Click on it to select it, and then click the 'Change' button located at the top of the program list.
A User Account Control (UAC) prompt will appear asking for permission to make changes. Click 'Yes' to proceed.
In the repair window that pops up, select the 'Online Repair' option instead of Quick Repair, and click the 'Repair' button. Follow the on-screen instructions until the process finishes.
Switch to WPS Office for a Smooth, Crash-Free Experience
If your Microsoft 365 applications continue to crash or fail to open, consider switching to WPS Office. It is a highly stable, lightweight alternative that lets you edit Word, Excel, and PowerPoint files for free, saving you from frustrating repair processes.
- 1. Download the Installer: Visit the official WPS website and download the free installation package for your operating system.
- 2. Install WPS Office: Run the setup file and follow the brief on-screen instructions to install the software in just a few minutes.
- 3. Open Your Documents: Launch WPS Office and open your existing Word, Excel, and PowerPoint files directly without any formatting loss.
Frequently Asked Questions
What is the difference between Quick Repair and Online Repair in Microsoft 365?
A Quick Repair runs fast and fixes local file corruption without needing an internet connection. An Online Repair is a deeper fix that uninstalls and reinstalls the entire Office suite, requiring a stable internet connection to download fresh files.
Will running an Online Repair delete my personal documents or emails?
No. Running an Online Repair for Microsoft 365 only affects the application files. All your personal documents, spreadsheets, presentations, and Outlook data files remain completely safe and untouched.
How long does a Microsoft 365 Online Repair typically take?
An Online Repair usually takes between 10 to 30 minutes. The exact duration depends on your internet download speed and computer performance, as it downloads the complete software package.
