ERROR_SXS_MULTIPLE_DEACTIVATION - 14086 (0x3706)
The activation context being deactivated has already been deactivated.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_SXS_MULTIPLE_DEACTIVATION error code indicates that an attempt was made to deactivate an activation context that has already been deactivated. This typically occurs in scenarios involving the Side-by-Side (SXS) assembly cache, where multiple components or assemblies are managed and loaded based on their version and manifest information.
Error Details
The Synchronization Manager (SxS) is responsible for managing the loading and unloading of assemblies within an activation context. An activation context can be thought of as a set of rules that determine which versions of assemblies should be used in a particular execution context. When an application or component requests to deactivate its current activation context, it expects that this context will no longer be active.
However, if the context has already been deactivated before the request is made, the SxS manager encounters this error. This situation can arise due to race conditions, incorrect sequence of operations, or other unexpected behavior in the application's execution flow.
Usage Context
This error code is relevant primarily within the context of managed applications and components that rely on the .NET Framework or other runtime environments that utilize SxS for assembly management. It can also be encountered in scenarios where custom activation contexts are created and managed by developers using Windows API functions such as CorBindToRuntimeEx.
Developer Interpretation
When encountering this error, it is important to understand the context in which the activation context was originally deactivated. This could have happened due to a previous call to deactivate or because of an unhandled exception that caused the context to be released prematurely. Developers should ensure that all operations related to deactivating an activation context are performed correctly and in the correct sequence.
Related Errors
ERROR_SXS_MULTIPLE_ACTIVATION(14085): Indicates that an attempt was made to activate an already activated activation context.ERROR_SXS_CONTEXT_NOT_FOUND(14092): Indicates that a requested activation context could not be found.
FAQ
Q: What does the ERROR_SXS_MULTIPLE_DEACTIVATION error mean?
A: It means an attempt was made to deactivate an activation context that has already been deactivated.
Q: How can I prevent this error from occurring?
A: Ensure that all operations related to deactivating an activation context are performed correctly and in the correct sequence. Avoid race conditions by carefully managing the lifecycle of your activation contexts.
Summary
The ERROR_SXS_MULTIPLE_DEACTIVATION error code is a specific technical issue encountered when attempting to deactivate an already deactivated activation context within the SxS assembly management framework. Developers should be mindful of the sequence and correctness of their operations involving activation contexts to avoid this error.