How to Troubleshoot 403 and Permission Errors in infolio Object Storage Sync
Troubleshoot 403, Access Denied, authorization, and authentication errors when infolio sync uses S3, R2, OSS, COS, Google Cloud Storage, Azure Blob, or Volcengine TOS.
Quick answer
403 and permission errors usually mean the storage provider rejected a request, not that infolio content is damaged. Check credentials, bucket or container scope, endpoint and region, expired SAS tokens, IAM policy, and network rules before changing app data.
Steps
Identify what kind of 403 you have
AWS documents that S3 Access Denied can come from explicit deny rules or missing allow rules. Azure, GCS, and other object stores can return similar errors for authentication, authorization, network, and policy issues. Record the exact error text, provider, bucket or container, and time.
- Save the full error message.
- Mark the sync source and bucket or container.
- Do not start by granting global administrator access.
Check whether the credential is still valid
Access keys, secret keys, HMAC keys, SAS tokens, and connection strings can be copied incorrectly, rotated, disabled, or expired. Confirm the credential state in the provider console, then re-enter it in infolio.
- Check whether the access key or HMAC key is enabled.
- Check whether SAS tokens expired or lack permissions.
- Confirm secrets, tokens, and connection strings were not truncated.
Check bucket, container, endpoint, and region
Object storage often requires endpoint and region to match. R2, S3, OSS, COS, GCS, Azure Blob, and TOS use different field names, but infolio must point to the intended storage location.
- Verify the bucket or container name.
- Verify region and endpoint.
- Do not use a static-website endpoint as the storage API endpoint.
Verify least-privilege permissions include writes
Least privilege does not mean read-only. Sync needs the ability to read, write, list, and update sync data. Scope those permissions to the infolio bucket or path instead of the whole cloud account.
- Allow the required read, write, and list operations.
- Confirm the policy scope includes the infolio path.
- Check explicit deny rules, object locks, firewall rules, and network restrictions.
Validate the fix with a small knowledge base
After changing permissions, test upload, download, and new-device recovery with a small knowledge base or a small set of content before returning to your main library.
- Verify upload and download first.
- Then verify recovery on another device.
- Keep repair notes in a secure document or vault.
Related pages
FAQ
Does a 403 mean my infolio data is corrupted?
Usually no. A 403 more commonly means the cloud storage provider rejected the request because of bad credentials, missing permissions, expired tokens, endpoint or region mismatch, or network policy.
Should I fix 403 errors by granting admin access?
No. Find the missing permission and scope it to the infolio bucket, container, or prefix. Global admin access increases accident and exposure risk.