Response status code does not indicate success: 404

After setting up automatic uploading, we noticed that sometimes after uploading zip and msixvc files, a 404 error occurs (sometimes as in the example after validator) and the remaining files do not upload. At the same time, 5 uploads may occur normally, and on the 6th, this may happen (it does not matter if they are consecutive or split by days).

2026-02-17 21:31:20.732 info: PackageUploader.ClientApi.Client.Xfus.Uploader.XfusUploader[0] Upload 100% complete.
2026-02-17 21:31:23.177 info: PackageUploader.ClientApi.Client.Xfus.Uploader.XfusUploader[0] Validator_{FILE_NAME}.xml Upload complete in: (HH:MM:SS) 00:00:05.
2026-02-17 21:31:23.813 fail: PackageUploader.ClientApi.Client.Ingestion.IngestionHttpClient[0] Exception: System.Net.Http.HttpRequestException: Response status code does not indicate success: 404 (Not Found).    at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode() + 0xde    at PackageUploader.ClientApi.Client.Ingestion.Client.HttpRestClient.<PutAsync>d__14`2.MoveNext() + 0x32b
2026-02-17 21:31:23.813 fail: PackageUploader.ClientApi.PackageUploaderService[0] An error occurred while uploading the package '{FILE_NAME}.msixvc' to branch '{BRANCH_NAME}' in product '{PRODUCT_NAME}'. System.Net.Http.HttpRequestException: Response status code does not indicate success: 404 (Not Found).    at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode() + 0xde    at PackageUploader.ClientApi.Client.Ingestion.Client.HttpRestClient.<PutAsync>d__14`2.MoveNext() + 0x4ed --- End of stack trace from previous location ---    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x20    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0xb2    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task, ConfigureAwaitOptions) + 0x4b    at PackageUploader.ClientApi.Client.Ingestion.Client.HttpRestClient.<PutAsync>d__12`1.MoveNext() + 0x109 --- End of stack trace from previous location ---    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x20    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0xb2    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task, ConfigureAwaitOptions) + 0x4b    at PackageUploader.ClientApi.Client.Ingestion.Client.HttpRestClient.<PutAsync>d__11`1.MoveNext() + 0x103 --- End of stack trace from previous location ---    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x20    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0xb2    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task, ConfigureAwaitOptions) + 0x4b    at PackageUploader.ClientApi.Client.Ingestion.IngestionHttpClient.<CommitPackageAssetAsync>d__10.MoveNext() + 0x443 --- End of stack trace from previous location ---    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x20    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0xb2    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task, ConfigureAwaitOptions) + 0x4b    at PackageUploader.ClientApi.PackageUploaderService.<UploadAssetAsync>d__23.MoveNext() + 0x35c --- End of stack trace from previous location ---    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x20    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0xb2    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task, ConfigureAwaitOptions) + 0x4b    at PackageUploader.ClientApi.PackageUploaderService.<UploadGamePackageAsync>d__13.MoveNext() + 0xfb0
2026-02-17 21:31:23.813 fail: PackageUploader.Application.Operations.UploadXvcPackageOperation[0] Response status code does not indicate success: 404 (Not Found).
2026-02-17 21:31:23.813 info: PackageUploader.Application.Operations.UploadXvcPackageOperation[0] PackageUploader has finished running.

Start with Client/Ingestion/Client/HttpRestClient.PutAsync and follow the calls through IngestionHttpClient.CommitPackageAssetAsync, PackageUploaderService.UploadAssetAsync, and UploadGamePackageAsync. Reproduce an automatic multi-file upload and inspect the request and response around the intermittent 404. Done means the affected package and remaining files upload successfully without the failure.