Download Security Update for Office Online Server (KB3115134) from Official Microsoft Download Center

The new Surface Laptop 3 back to back

New Surface Laptop 3

The perfect everyday laptop is now even faster

Person using Power BI Desktop

Power BI

Transform data into actionable insights with dashboards and reports

Security Update for Office Online Server (KB3115134)

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

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