Troubleshoot Strange Cursor Behavior in Office 365 Apps on Win 10

Check for Updates

Ensure that your Windows 10 and Office 365 apps are up-to-date. Go to Settings > Update & Security > Windows Update and check for available updates. If any updates are available, install them. Similarly, check for Office 365 updates by going to File > Account > Office Updates.

Disable Hardware Acceleration

Disabling hardware acceleration in Office 365 apps might help resolve the cursor issue. Go to File > Options > Advanced. Under the "Display" section, uncheck the "Use hardware graphics processing" option and click "OK."

Reset Office 365 Apps

Try resetting the Office 365 apps to their default settings. Go to Settings > Apps > Apps & features. Find the Office 365 apps and click "Advanced options." Click "Reset."

Repair Office 365 Installation

If resetting the apps doesn't work, try repairing the Office 365 installation. Go to Control Panel > Programs > Programs and Features > Microsoft Office > Office 365 > Repair.

Reinstall Office 365

If none of the above solutions work, you might need to uninstall and reinstall Office 365. Go to Control Panel > Programs > Programs and Features > Microsoft Office > Office 365 > Uninstall. After uninstalling, download and install the latest version of Office 365 from the Microsoft website.

Disable Antivirus Software

Sometimes, antivirus software can interfere with Office 365 apps and cause cursor issues. Try disabling your antivirus software temporarily and see if the problem persists.

Contact Microsoft Support

If none of the above solutions work, contact Microsoft Support for further assistance. They can help you diagnose and resolve the issue.