Technical Questions

General

• Changing of sign-on provider for WebPros Account February 17, 2026
• Self Hosted Comet Server is shown as offline: FATAL: Couldn't validate license key (Licensing authority denied our request.). Server will shut down.

Security

• Vulnerability CVE-2026-31431: Copy Fail
• [CVE-2026-32999] RCE on Comet Server via branding configuration
• [CVE-2026-29200] Сritical IDOR vulnerability in Comet Backup

Storage Vaults & Storage Providers

• How to configure Windows Authenticode code-signing with Azure Key Vault?
• How to remove unwanted backup data in Comet?

Users and Groups Configuration

• Is it possible to add multiple admins and limit their privileges to read-only access in the Comet Management Console?

Backup and restore

• Comet Backup agent fails to back up the home directories (/var/directory) of the system user on Linux
• Backup, reindex and deep scan jobs consistently fail with in Comet Backup during the retention pass: unexpected EOF
• Backup is failing with elevator service is missing error in Comet Backup
• Backup or reindex job fails in Comet Backup: zero-byte pack file
• Backup job fails with the error in Comet Backup: Cannot proceed - another task needs to finish using the Storage Vault first - Locked by device

Installation & Upgrade

• Bulk Update does not report all jobs at successful
• Installation of Comet Backup fails on DSM 7: Unexpected HTTP 403 accessing /healthcheck-localroot