Common conflicting add-ins: Adobe PDF Maker, Nuance PDF, Cisco WebEx, and some antivirus Office integrations.
The error message is a common issue encountered by users of Microsoft Office products like Word, Excel, and PowerPoint. It occurs because a third-party add-in, WinZip Express for Office , was installed alongside the main WinZip software . This add-in often conflicts with newer versions of Office or suffers from corrupted files, outdated code, or missing dependencies like .NET Framework. Why This Exception Happens
Conflicting add-ins are a leading cause. Here’s how to isolate them (using Microsoft Word as an example, but steps are similar for Excel/PowerPoint):