AppCompatCache

Overview

• Created by Microsoft to identify application compatibility issues, helps developers troubleshoot legacy functions

  • Windows looks at AppCompatCache to determine if modules require shimming for compatibility

• The Cache data tracks file path, size, last modified time, and last execution time (depending on OS)

• Most recent on top, written on shutdown

Registry Key

XP:

HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\AppCompatibility\AppCompatCache

Non-XP:

HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\AppCompatCache\AppCompatCache