Orbmu2k/nvidiaProfileInspector · error · NvapiException

DRS_CreateApplication

Error message

DRS_CreateApplication

What it means

NvapiException thrown by AddApplication when DRS_CreateApplication returns a non-OK status other than NVAPI_EXECUTABLE_ALREADY_IN_USE (which is intercepted for bug mitigation). It means the driver refused to register the executable in the profile. The wrapped NvAPI_Status gives the exact reason.

Solutions

1. Check the NvapiException Status; if NVAPI_EXECUTABLE_ALREADY_IN_USE, the library's MitigateNvapiAlreadyInUseBug path should handle it — verify it ran.
2. Ensure applicationName is a valid executable file name and fileInFolder points to its directory, matching NVDRS_APPLICATION field expectations.
3. Confirm the hProfile handle is valid and the profile still exists.
4. Delete the duplicate application registration from the other profile (DRS_DeleteApplicationEx) and retry.

Example fix

// before
if (caRes != NvAPI_Status.NVAPI_OK)
    throw new NvapiException("DRS_CreateApplication", caRes);
// after
if (caRes == NvAPI_Status.NVAPI_EXECUTABLE_ALREADY_ON_PROFILE)
    return; // already registered, nothing to do
if (caRes != NvAPI_Status.NVAPI_OK)
    throw new NvapiException("DRS_CreateApplication", caRes);

if (string.IsNullOrWhiteSpace(applicationName) ||
    applicationName.Contains("\\") || applicationName.Contains("/"))
    throw new ArgumentException("applicationName must be a bare executable file name");

try { AddApplication(hSession, hProfile, appName, folder); }
catch (NvapiException ex) when (ex.Status == NvAPI_Status.NVAPI_EXECUTABLE_ALREADY_IN_USE)
{ /* already registered elsewhere - decide whether to remove and re-add */ }
catch (NvapiException ex)
{ log.Error($"DRS_CreateApplication failed: {ex.Status}"); throw; }

When it happens

Trigger: AddApplication calls DRS_CreateApplication with an NVDRS_APPLICATION_V4 and the driver returns a failure status — invalid appName format, missing path/filename fields, invalid profile handle, or the executable already registered in another profile.

Common situations: Adding an app whose name is not a plain executable filename; adding an app already attached to another profile; wrong NVDRS_APPLICATION version field; stale hProfile handle.

Understand the failure class

Background: "already exists" / EEXIST / FileAlreadyExistsException: what the 'file already exists' error means and how to fix it — this error's family across 37 libraries.

Related errors

• DRS_DeleteApplication
• DRS_EnumSettings
• DRS_EnumApplications
• DRS_FindApplicationByName
• DRS_SaveSettings

AI-assisted analysis of Orbmu2k/nvidiaProfileInspector@2f50c388b3 (2026-09-15). Data as JSON: /api/errors/39133ebbfb0e671b. Report an issue: GitHub.

Appendix: source

Thrown at nvidiaProfileInspector/Common/DrsSettingsServiceBase.cs:251

        }

        protected void AddApplication(IntPtr hSession, IntPtr hProfile, string applicationName)
        {
            var newApp = new NVDRS_APPLICATION_V4()
            {
                version = nvw.NVDRS_APPLICATION_VER_V4,
                appName = applicationName,
            };

            var caRes = nvw.Instance.DRS_CreateApplication(hSession, hProfile, ref newApp);

            if (caRes == NvAPI_Status.NVAPI_EXECUTABLE_ALREADY_IN_USE)
            {
                if (MitigateNvapiAlreadyInUseBug(hSession, hProfile, newApp)) return;
            }

            if (caRes != NvAPI_Status.NVAPI_OK)
                throw new NvapiException("DRS_CreateApplication", caRes);

        }

        protected void AddApplication(IntPtr hSession, IntPtr hProfile, string applicationName, string fileInFolder)
        {
            var newApp = new NVDRS_APPLICATION_V4()
            {
                version = nvw.NVDRS_APPLICATION_VER_V4,
                appName = applicationName,
                fileInFolder = fileInFolder
            };

            var caRes = nvw.Instance.DRS_CreateApplication(hSession, hProfile, ref newApp);

            if (caRes == NvAPI_Status.NVAPI_EXECUTABLE_ALREADY_IN_USE)
            {
                if (MitigateNvapiAlreadyInUseBug(hSession, hProfile, newApp)) return;
            }

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