Download Security Update for Microsoft Office Excel Viewer (KB955935) from Official Microsoft Download Center

A woman with a laptop on her lap gazes out a window

Office 365

Experience the best of Office with the latest versions of Word, Excel, PowerPoint, and more

Security Update for Microsoft Office Excel Viewer (KB955935)

Important! Selecting a language below will dynamically change the complete page content to that language.

Select Language:
A security vulnerability exists in Microsoft Office Excel Viewer that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.