Azure Blob storage: Cannot connect to host name.blob.core.windows.net:443 ssl:default [Temporary failure in name resolution]

govind 0 Reputation points
2025-03-04T05:17:23.6466667+00:00

Azure Blob storage: Cannot connect to host ********.blob.core.windows.net:443 ssl:default [Temporary failure in name resolution]
This issue occurs occasionally while uploading .parquet files on Data lake.

Location : East US
Primary/Secondary Location

Primary: East US, Secondary: West US

Performance : Standard
Replication : Geo-redundant storage (GRS)
Account kind : StorageV2 (general purpose v2)
Disk state : Primary: Available, Secondary: Available

Azure Storage
Azure Storage

Globally unique resources that provide access to data management services and serve as the parent namespace for the services.

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  1. Anonymous
    2025-03-04T09:00:36.87+00:00

    Hi @govind,

    The error message "Temporary failure in name resolution" typically indicates a DNS resolution issue, which means that your system is unable to resolve the hostname to an IP address.

    Troubleshooting steps:

    1. Check Network Connectivity: Ensure that your network connection is stable and that you can access other internet resources.
    2. DNS Configuration: Verify that your DNS settings are correctly configured on the machine uploading the .parquet files to Data Lake. Try using a public DNS server like Google DNS (8.8.8.8) or Cloudflare DNS (1.1.1.1) temporarily to see if it resolves the issue.
    3. Firewall and Security Groups: Check if there are any firewall rules or security group settings that might be blocking access to the Azure Blob Storage endpoint.
    4. Retry the Operation: Since the issue occurs occasionally, it might be a temporary network glitch. Retry the upload after a short time.

    Please let us know if you have any further queries. I’m happy to assist you further.

    Please consider to “up-vote” and "Accept the answer" wherever the information provided helps you, this can be beneficial to other community members.

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