> Source: [sk184916](https://support.checkpoint.com/results/sk/sk184916)

# sk184916 - Microsoft Office fails to launch due to a conflict between WDEG and Check Point Endpoint Security

| Property | Value |
|----------|-------|
| Solution ID | sk184916 |
| Date Created | 2026-04-29 |
| Last Modified | 2026-05-07 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | E89.X |

## Symptoms

- * Microsoft Office applications fail to launch after installing Check Point Endpoint Security.
* A white or blank screen appears when launching Microsoft Office applications.

## Cause

The issue occurs due to a conflict between Windows Defender Exploit Guard (WDEG) and Check Point Endpoint Security.  
WDEG detects Endpoint Security's process injection (hooking) as suspicious behavior. As a result, WDEG enforces memory protection that marks memory as non-executable. This prevents Microsoft Office from completing initialization and causes the application to exit unexpectedly.

## Solution

This solution requires authentication. Please log in to view the full solution.

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