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    Object Storage Service:OSS files in a frozen state cannot be accessed

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    Object Storage Service:OSS files in a frozen state cannot be accessed

    Last Updated:Sep 24, 2026

    Problem description

    Files in Alibaba Cloud Object Storage Service (OSS) are inaccessible if they are in a frozen state. This issue occurs in the following scenarios:

    • The file storage class is Archive Storage, Cold Archive, or Deep Cold Archive.

    • The file contains content that violates our policies.

    Problem cause

    Files in Alibaba Cloud OSS are in a frozen state for the following reasons:

    • If a bucket's storage class in OSS is Archive Storage or Cold Archive, files in the bucket are in a frozen state by default.

    • The file storage class was set to Archive Storage or Cold Archive when the file was uploaded.

    • A lifecycle rule transformed the file's storage class to Archive Storage or Cold Archive.

    • This file has been made private because it was reported for a violation.

    Solutions

    If an OSS resource is in a frozen state, perform the following steps to troubleshoot the issue:

    1. Open the Message Center and click the Security message tab to check for violation notifications.

      • If the resource is frozen for security reasons, go to the Illegal Content page to view the URLs of the violating content. Follow the system prompts to remove all illegal files and pages. This includes, but is not limited to, the content specified in the notification. To do this, remotely access your server, find the illegal files by their URL paths, and delete them. After you delete the files, submit a request to unblock the content.

      • If there are no violation notifications, proceed to the next step.

    2. Log on to the Object Storage Service (OSS) console. In the Buckets list, click the name of the target bucket. Go to the Files page and check the Storage Class column. If a file's storage class is Archive Storage or Cold Archive, do the following:

      1. Before you can access an object in the Archive Storage or Cold Archive storage class, you must restore it by calling the RestoreObject operation. For more information, see Restore objects.

        Note

        • Restoring an object from Archive Storage takes about 1 minute. The time required to restore an object from Cold Archive depends on the data size and the selected restoration mode.

        • Data retrieval fees are incurred when you restore objects from Archive Storage and Cold Archive. For more information, see Data processing fees.

      2. After an object is restored, you can transform its storage class to Standard or IA as needed. For more information, see Transform storage classes.