> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/cc-software/troubleshoot/command-centre-errors/gallagherftcapi-dll-failed-to-load.md).

# GallagherFTCAPI.dll Failed to Load

**Error:** "The module 'C:\Program Files (x86)\Gallagher FTCAPI\GallagherFTCAPI.dll' failed to load. Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .dll files. The specified module could not be found."

You are unable to uninstall or install Gallagher FTCAPI (Controller API). This can also happen when uninstalling the Gallagher FTCAPI Middleware Framework (FMF). The message shows up when you uninstall the Controller API and the FMF was also on the same machine.

Both the Controller API and FMF use the same `GallagherFTCAPI.dll` during installation, which is registered onto the machine. When the DLL is registered a second time, it breaks the first registration and the first one becomes unregistered.

![Error: GallagherFTCAPI.dll failed to load](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-62938462f87091613dcc20fa90009e383880dbba%2FSECHUB-CCS-ERR-FTCAPI-DLL-01.jpg?alt=media)

## Resolution

1. Uninstall the second application (in this case, the FMF).
2. Re-register `GallagherFTCAPI.dll` for the Controller API using a command prompt with Admin rights.
3. The Controller API DLL is at `C:\Program Files (x86)\Gallagher\Gallagher FTCAPI`.
4. Run: `Regsvr32 GallagherFTCAPI.dll`
5. A prompt confirms the `.dll` is successfully registered.
6. Retry the Controller API uninstall.

![Command prompt confirming GallagherFTCAPI.dll re-registration](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-a08acc5d0060a85a6f4ce3bb02afd0e109bb077d%2FSECHUB-CCS-ERR-FTCAPI-DLL-02.png?alt=media)


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