Office Apps Freezing

Fix Microsoft Office 2021 Apps Freezing or Crashing

Huma Ashraf ChHuma Ashraf Ch Oct 23, 2026 869 views

Question details

The user needs to resolve frequent freezing and crashing issues with Microsoft Excel and PowerPoint in Office Home and Student 2021 on a new computer.

How to Fix Microsoft Office 2021 Apps Freezing or Crashing
Product
Microsoft Office Home and Student 2021
Device & OS
Windows
Scenario
Using Excel or PowerPoint for daily tasks after freshly installing Office 2021 on a new computer.
Observed behavior
Excel and PowerPoint frequently stop responding, requiring a forced system restart because keyboard shortcuts like Ctrl+Alt+Delete fail to resolve the freeze.
Before you start

Before troubleshooting, check if the freezing is isolated to your Office applications or if the entire Windows operating system is locking up, as full system freezes often indicate underlying hardware or display driver issues.

Solution 1Recommended

Open Office Apps in Safe Mode and Disable Add-ins

Starting Office in Safe Mode bypasses third-party add-ins or extensions that frequently cause applications like Excel and PowerPoint to crash or freeze.

Many unexpected crashes in Office apps are caused by incompatible or outdated COM add-ins. Booting the application in Safe Mode helps isolate whether the software itself is failing or if an external plugin is the culprit.

1
Launch Safe Mode

Press the Windows key + R to open the Run dialog box. Type 'excel /safe' or 'powerpnt /safe' and press Enter to launch the respective application in Safe Mode.

2
Access Add-in Settings

If the application runs smoothly in Safe Mode, navigate to File > Options > Add-ins in the left-hand menu.

3
Disable COM Add-ins

At the bottom of the window, select 'COM Add-ins' from the Manage drop-down list and click 'Go'. Uncheck all the listed add-ins to disable them, click OK, and restart the application normally.

Open Office Apps in Safe Mode and Disable Add-ins
Identifying the Culprit: If disabling all add-ins stops the freezing, re-enable them one by one, restarting the app each time, to pinpoint exactly which add-in is causing the crashes.
Free Microsoft Office alternative

Switch to WPS Office for a Crash-Free Experience

If Microsoft Office continues to freeze or crash on your computer, consider switching to WPS Office. It is a free, lightweight, and highly stable office suite that prevents frustrating system lockups while retaining seamless compatibility with your existing Microsoft documents.

  1. 1. Download the software: Visit the official WPS Office website and click the free download button to get the lightweight installer.
  2. 2. Install quickly: Run the setup file. The installation takes just a few clicks and requires minimal disk space.
  3. 3. Open existing files: Double-click your previously saved Excel or PowerPoint files. They will instantly open in WPS Office without crashing or freezing.
100% compatible with Microsoft Office formats including .xlsx, .pptx, and .docx.Ultra-lightweight software architecture prevents system freezing and reduces CPU usage.Features a familiar interface, eliminating any learning curve when switching from MS Office.Completely free to download and use for essential Word, Excel, and PowerPoint tasks.
microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel freeze only when I copy and paste data?

This frequently happens if the system clipboard is overloaded, conditional formatting rules in the spreadsheet are too complex, or a third-party add-in is interfering with the clipboard. Try pasting using 'Paste Special' > 'Values' to avoid copying excessive background formatting.

Will running an Online Repair on Office 2021 delete my Excel and PowerPoint files?

No, repairing or even completely reinstalling Microsoft Office only affects the application files. Your personal documents, spreadsheets, and presentations saved on your local hard drive or OneDrive will remain perfectly safe and untouched.

How do I know if a damaged workbook is causing Excel to freeze?

If Excel operates smoothly with blank documents or other files but freezes only when opening a specific file, that workbook is likely corrupted. You can attempt to fix it by opening Excel first, going to File > Open, selecting the problematic file, clicking the arrow next to the 'Open' button, and choosing 'Open and Repair'.