Azure Blob Storage Forum

Hello everyone, I'm encountering an issue when trying to upload large files (over 2GB) to Azure Blob Storage using the latest version of the Azure Blob Storage SDK for .NET. The upload consistently fails with a `StorageException`, but the error message is very generic and doesn't provide specific details about what went wrong. I'm using the `UploadFromFileAsync` method. Has anyone else faced this problem or have suggestions on how to troubleshoot this further? Are there any known limitations or specific configurations required for large file uploads? Thanks in advance for any help!

Hi BlobMaster, I've seen similar issues before. Make sure you're checking the inner exceptions of your `StorageException`. Sometimes the underlying HTTP error code can provide more clues. Also, ensure your network connection is stable and that there are no timeouts configured too aggressively in your application or on the Azure Storage account. You might also want to try the Block Blob Upload Manager for potentially more robust handling of large files, although `UploadFromFileAsync` should work for this.

Thanks CloudNinja! I checked the inner exceptions, and it seems to be related to a `System.Net.Http.HttpRequestException` with an `InnerException` indicating a `SocketException`. This is still a bit vague. I'll look into the Block Blob Upload Manager.

BlobMaster, A `SocketException` often points to network connectivity issues or timeouts. When uploading large files, Azure Storage uses chunked uploads (block blobs). If any part of the upload process times out, the entire operation can fail. Consider setting a longer timeout for your HTTP client. If you're using `HttpClient` directly or indirectly, you might need to configure its `SendTimeout` or `ResponseHeadersReadTimeout`. The Blob Storage SDK usually manages this, but explicitly setting a higher timeout for the operation might help. ```csharp // Example (conceptual, actual SDK usage may vary) var blobClient = new BlobClient(connectionString, containerName, blobName); // Configure client options if available, or manage HttpClient directly var options = new BlobClientOptions { // ... other options RetryOptions = new RetryOptions(new ExponentialBackoff(maxRetries: 5, delay: TimeSpan.FromSeconds(1), maxDelay: TimeSpan.FromSeconds(30))), Transport = new HttpClientTransport(new HttpClient { Timeout = TimeSpan.FromMinutes(5) }) // Increase timeout }; // Recreate client or use with options await blobClient.UploadFromFileAsync(filePath, options: options); ``` Also, ensure your blob container is in a region geographically close to your application server to minimize latency.