ERROR_RESOURCE_LANG_NOT_FOUND - 1815 (0x717)
The specified resource language ID cannot be found in the image file.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_RESOURCE_LANG_NOT_FOUND error code indicates that a requested resource language ID could not be located within the image file. This typically occurs during operations involving localization or resource loading, where specific language resources are expected to be present.
Error Details
This error is returned when an application attempts to access a resource with a specified language ID that does not exist in the associated resource files. The error code 1815 (0x717) signifies this condition and can occur across various Windows APIs, particularly those related to localization.
Usage Context
This error is commonly encountered when an application tries to load localized resources such as strings, images, or other language-specific data from a resource file. The context in which the error occurs depends on the specific API call that triggered it. For example, it might be returned by functions like LoadString, LoadIcon, or LoadBitmap if the requested language is not present.
Developer Interpretation
When this error code is encountered, developers should ensure that the resource files contain all necessary localized resources and that the correct language ID is being used. The application must handle such errors gracefully to provide a consistent user experience across different languages and locales.
Related Errors
ERROR_FILE_NOT_FOUND(2)ERROR_INVALID_PARAMETER(87)ERROR_BAD_EXE_FORMAT(193)
FAQ
Q: What does the error code 1815 mean?
A: The error code 1815 indicates that a requested resource language ID could not be found in the image file.
Q: How can I resolve this issue?
A: Ensure that all necessary localized resources are included in your application's resource files and use the correct language IDs when accessing them.
Summary
The ERROR_RESOURCE_LANG_NOT_FOUND error (1815) is a specific technical condition where an application requests a non-existent language ID from a resource file. Developers should verify that all required localized resources are present and correctly referenced to avoid this issue.