Application Compatibility Toolkit (ACT)


The Application Compatibility Toolkit versions covered in this article are no longer supported. The last supported version is included in the Windows 10 Assessment and Deployment Kit

Affected Platforms

Clients: Windows XP | Windows Vista | Windows 7

Servers: Windows Server 2003 | Windows Server 2008 | Windows Server 2008 R2


The Microsoft Application Compatibility Toolkit (ACT) is a lifecycle management tool that assists in identifying and managing your overall application portfolio, reducing the cost and time involved in resolving application compatibility issues, and helping you quickly deploy Windows and Windows updates.


With the ACT, you can:

  • Analyze your portfolio of applications, websites, and computers
  • Evaluate operating system deployments, the impact of operating system updates, and your compatibility with websites
  • Centrally manage compatibility evaluators and configuration settings
  • Rationalize and organize applications, websites, and computers
  • Prioritize application compatibility efforts with filtered reporting
  • Add and manage issues and solutions for your enterprise-computing environment
  • Deploy automated mitigations to known compatibility issues
  • Send and receive compatibility information from the Microsoft Compatibility Exchange