ERROR_SXS_CANT_GEN_ACTCTX - 14001 (0x36B1)
The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_SXS_CANT_GEN_ACTCTX error indicates that an application failed to start due to a misconfiguration in its side-by-side assembly (SxS) manifest. This error is typically encountered when the system cannot generate an activation context for the application, which is necessary for it to run correctly.
Error Details
The ERROR_SXS_CANT_GEN_ACTCTX error code 14001 (0x36B1) suggests that there is a problem with the side-by-side configuration of the application. This can include issues such as missing or incorrect manifest files, invalid assembly references, or conflicts between different versions of assemblies.
Usage Context
This error typically occurs when an application attempts to start and fails due to its side-by-side configuration being incorrect. It is often encountered in environments where applications rely on specific versions of shared libraries or assemblies that are managed through the side-by-side assembly framework.
Developer Interpretation
Developers should interpret this error as a signal that there is an issue with the application's manifest file or its dependencies. The application may be missing necessary manifests, or the manifests might contain incorrect information about the required assemblies and their versions. Developers are advised to review the application's manifest files and ensure they are correctly configured.
Related Errors
ERROR_SXS_MISMATCH(14002, 0x36B2): Indicates a mismatch between the version of an assembly expected by the application and the actual version available in the side-by-side store.ERROR_SXS_FILE_HASH(14005, 0x36B9): Suggests that there is a hash mismatch for one or more assemblies, indicating potential corruption or tampering with the files.
FAQ
Q: What does the ERROR_SXS_CANT_GEN_ACTCTX error mean?
A: It indicates an issue with the side-by-side configuration of an application, preventing it from generating a valid activation context and starting correctly.
Q: How can I resolve this error?
A: Review the application's manifest files for correctness. Ensure that all required assemblies are present and their versions match those specified in the manifests.
Summary
The ERROR_SXS_CANT_GEN_ACTCTX error is a specific technical issue related to side-by-side assembly configuration, indicating an incorrect setup that prevents an application from starting properly. Developers should focus on validating and correcting the application's manifest files and dependencies.