My permission to schedule a QNAP sync job was suddenly denied.

Question

My permission to schedule a QNAP sync job was suddenly denied. How do I check that my permission is still valid for data sync or back up?

Answer 1

Hi, if your QNAP HBS 3 sync job suddenly throws a "permission denied" error, here's a quick human-to-human summary to figure out what went wrong. Start by checking the Azure side: maybe the access key was rotated, the SAS token expired, or an RBAC role was removed. Also, recent changes to firewalls or private endpoints could be blocking access, or the subscription might’ve been disabled or moved. To confirm, try connecting to the container using the same credentials from Azure Storage Explorer or azcopy. If you get a 403 there too, the issue is definitely on Azure’s side. If that works, the problem is likely on the QNAP itself. Check if HBS still has the correct storage credentials, ensure your NAS user still has HBS/replica rights, verify you’re running a recent HBS version (especially important if you use Azure AD), and make sure the NAS clock isn’t skewed — even 15 minutes off can break SAS auth. For long-term stability, consider switching from access keys to SAS or Azure AD with RBAC. If you’re stuck, use a simple az storage blob list command to test from the CLI using the same auth method as QNAP. Once you pinpoint the failing part — whether it’s a rotated key, expired SAS, missing role, or misconfigured NAS — fix it and your sync job should run again without the "permission denied" error.