File Access Troubleshooting Guide

When you encounter file access issues, you can typically investigate several key aspects. This guide will help you systematically diagnose and resolve these problems.

1. Storage Service Permission Check

Policy Permission Control System

Storage space access permissions are controlled by Policies. Please follow these steps to check:

  1. Access the space settings page
  2. Check if there are any policies that set MOSGetObject to Deny
  3. Solutions:
    • Remove restrictive policies
    • Modify policy permissions to Allow
    • If no policies exist, consider adding one that explicitly allows MOSGetObject

2. CDN Configuration Status Check

Configuration Effectiveness

Some CDN configuration changes may cause temporary access issues, especially in the following situations:

  • When modifying the origin site
  • When switching anti-hotlinking features

Troubleshooting Steps:

  1. Check configuration status in the Domains module
  2. Pay attention to notification messages above feature settings
  3. If configurations haven't taken effect for an extended period:
    • Seek help through online customer service
    • Provide your domain name for quick problem identification

3. Anti-hotlinking Feature Check

Signature Anti-hotlinking

Signature anti-hotlinking is an advanced security feature that requires special attention:

  • Once enabled, all links need temporary signatures generated
  • Use case: Prevention of malicious traffic attacks
  • Alternative solution: Consider using CORS-based anti-hotlinking
    • Easier to implement
    • Suitable for handling general hotlinking issues
    • Cannot defend against targeted attacks

Solutions:

  1. If enabled by mistake: Disable the feature in space settings
  2. If needed:
    • Implement signature generation logic
    • Or switch to CORS anti-hotlinking solution

4. Storage Type Check

Special Storage Type Handling

Some storage types cannot be accessed directly by default:

  • Archive storage
  • Deep archive storage

Solutions:

  1. Check storage type in the file list
  2. If it's an archive type, you can:
    • Perform file restoration
    • Or modify storage type to standard storage

Getting Support

If the above methods don't resolve the issue, please:

  1. Contact online customer service
  2. Provide complete domain information
  3. Describe the troubleshooting steps you've already tried

Our technical support team will assist you with in-depth investigation and problem resolution.