Problem
A NAS SMB share reconnects under a different authentication context after credential expiration, causing the NLE to report missing media paths.
Solution
Root Cause / Diagnostic:
When stored network credentials or Kerberos tickets expire, client operating systems attempt silent guest reconnection or fallback to cached local credentials. If the fallback account lacks read permissions for specific subdirectories or media pools, the OS fails to enumerate the target directories, prompting the NLE to display "Media Offline" red frames across the timeline.
Actionable Fix:
1. Credential Manager Standardization: Clear stale entries in Windows Credential Manager or macOS Keychain and re-save the primary NAS administrative user credentials with permanent persistence.
2. Account Password Policy Expiration Exemption: In the NAS user management console, set the dedicated video editing service account to "Password Never Expires".
3. Share Remount & Path Relink Verification: Remount the SMB share using the verified account and relaunch the NLE to confirm all project clips link immediately without authorization prompts.
Pro Tip:
Set your NAS video editing user account to "Password Never Expires"; an expired password can cause your computer to reconnect as a guest user, suddenly turning all your timeline media offline.
When stored network credentials or Kerberos tickets expire, client operating systems attempt silent guest reconnection or fallback to cached local credentials. If the fallback account lacks read permissions for specific subdirectories or media pools, the OS fails to enumerate the target directories, prompting the NLE to display "Media Offline" red frames across the timeline.
Actionable Fix:
1. Credential Manager Standardization: Clear stale entries in Windows Credential Manager or macOS Keychain and re-save the primary NAS administrative user credentials with permanent persistence.
2. Account Password Policy Expiration Exemption: In the NAS user management console, set the dedicated video editing service account to "Password Never Expires".
3. Share Remount & Path Relink Verification: Remount the SMB share using the verified account and relaunch the NLE to confirm all project clips link immediately without authorization prompts.
Pro Tip:
Set your NAS video editing user account to "Password Never Expires"; an expired password can cause your computer to reconnect as a guest user, suddenly turning all your timeline media offline.