Support Advisory: The .Net IIS Applications Crash with Windows Patch KB5027123 KB5027219

This document describes the support advisory for an AppDynamics product.

Summary

When you apply the Windows patch KB5027123 KB5027219, the .Net IIS applications crash with the following error:

.NET Runtime version 2.0.50727.9171 - Fatal Execution Engine Error (7402E5A6) (80131506)

Affected Software

This issue occurs mostly in the .Net Agent that uses .Net Framework 2.0 and 3.5 applications.

Impact

.Net IIS applications crash.

What if I have questions?

If you have any questions or concerns, please contact customer support or use our support portal.