ERROR_SXS_INVALID_DEACTIVATION - 14085 (0x3705)
The activation context being deactivated is not active for the current thread of execution.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_SXS_INVALID_DEACTIVATION indicates that an attempt was made to deactivate an activation context on a thread where the context is not currently active. This can occur in scenarios involving side-by-side assemblies and manifest-based application deployment.
Error Details
This error typically arises when a developer or system attempts to deactivate an activation context that has not been previously activated for the current thread of execution. Activation contexts are used by the Side-by-Side (SXS) assembly manager to manage the loading, versioning, and unloading of assemblies in a controlled manner.
Usage Context
This error is relevant in environments where applications or components rely on SXS-managed assemblies. It can be encountered during runtime operations that involve activation context management, such as application startup, component initialization, or dynamic assembly loading.
Developer Interpretation
When encountering this error, developers should ensure that the activation context has been properly activated before attempting to deactivate it. This involves verifying the state of the thread and ensuring that the necessary context is active prior to performing deactivation operations.
Related Errors
ERROR_SXS_ACTIVATION_CONTEXT_DISABLED(14086)ERROR_SXS_MULTIPLE_DEACTIVATIONS(14092)
FAQ
Q: What does the error code 14085 mean?
A: The error indicates that an attempt was made to deactivate an activation context on a thread where the context is not currently active.
Q: How can I resolve this issue?
A: Ensure that the activation context has been activated before attempting to deactivate it. Verify the state of the thread and the current context before performing deactivation operations.
Summary
The ERROR_SXS_INVALID_DEACTIVATION error signifies an attempt to deactivate an activation context on a thread where the context is not active, which can occur in environments utilizing SXS-managed assemblies. Developers should ensure proper context management to avoid this issue.