If you manage software updates in Microsoft Configuration Manager (Current Branch), you have likely encountered the dreaded SUP0108 error.
The full error message usually reads:
"SUP0108: A deployment or update operation is already in progress (best)".
This error halts your Windows Server Update Services (WSUS) synchronization and prevents you from deploying critical patches. It is frustrating because it often appears without an obvious cause, locking the Software Update Point (SUP) into a phantom state of "busy."
In this guide, we will break down exactly what this error means, why it happens (the "best" context), and provide step-by-step solutions to clear the lock and get your updates moving again.
| Enhancement | Benefit | |-------------|---------| | TTL on lock | Prevents deadlock if a deployment crashes | | User notification via webhook / SSE | Informs user when queued deployment starts | | Idempotency key | Avoids duplicate deployments from retries | | Admin force-unlock endpoint | Manual override if needed | | Metrics (Prometheus) | Track queue length, lock contention |
Wait for the Current Operation to Complete: The simplest solution is to wait until the ongoing deployment or update operation is finished. You can monitor the status of deployments in the SCCM console.
Check and Cancel Ongoing Deployments: If feasible, review the current deployments and cancel any that are deemed unnecessary or redundant. This might free up resources and allow your operation to proceed. Fixing SUP0108: "A Deployment or Update Operation is
Verify and Adjust Maintenance Windows: Ensure that maintenance windows are appropriately configured. If a collection of devices is set to only allow updates during a specific time window, and that window is in the past or not properly set, it could cause conflicts.
Review and Correct Configuration Manager Settings: Ensure that all settings in Configuration Manager are correctly configured. This includes checking the Software Update Point, distribution points, and any specific collections or deployment settings.
Retry the Deployment/Update: After identifying and addressing the cause, retry the deployment or update operation.
The "operation already in progress" is a lock mechanism. Here are the three most common culprits:
WSUS needs regular database maintenance. Use a scheduled script to run the WSUS Server Cleanup Wizard weekly via PowerShell to prevent database bloat that leads to locks.
If you want, tell me what deployment system you use (e.g., Jenkins, GitHub Actions, Kubernetes, SOT, Intune, SCCM) and I’ll provide tailored commands and exact DB/lock locations.
The error code SUP0108 ("A deployment or update operation is already in progress") is a common message encountered on Dell PowerEdge servers, typically within the iDRAC (Integrated Dell Remote Access Controller) or Lifecycle Controller. It indicates that the system believes a firmware update or deployment task is currently running and will not allow a new one to start until the current one finishes. Why it Happens "SUP0108: A deployment or update operation is already
This message often appears even when no operation is actively visible. Common causes include:
Stuck RAM Drive: The iDRAC firmware installer creates a temporary RAM drive on the host OS to run updates; if it doesn't clear properly, subsequent updates are blocked.
Active Lifecycle Controller: The system may falsely report the Lifecycle Controller is in use during driver mounting or other UI tasks.
Pending Job Queue: A previous job may be "scheduled" or "running" in the background job queue. Best Ways to Resolve SUP0108
Perform an iDRAC Reset (Soft Reset)This is the quickest fix and does not affect the host operating system.
Action: Log into the iDRAC web interface, navigate to the Maintenance tab, and select Diagnostics > Reset iDRAC.
Alternative: Use the RACADM command-line tool with the command: racadm racreset. Clear the Job QueueStuck jobs can block the update engine. Action: In the iDRAC UI, go to Maintenance > Job Queue. This error halts your Windows Server Update Services
Action: Select and delete any jobs that are not "Completed" or "Failed." You can also use racadm jobqueue delete -i JID_CLEARALL.
Perform a Cold Boot (Power Drain)If a soft reset fails, a physical power cycle is often necessary to clear the hardware's temporary state.
Action: Shut down the server and disconnect all power cables.
Action: Press and hold the power button for at least 30 seconds to drain residual power, then reconnect and restart.
Wait Out the RAM Drive (18 Hours)If you cannot perform a cold boot immediately, the temporary RAM drive created by the installer is designed to clear itself automatically after approximately 18 hours.
Update iDRAC FirmwareDell has released firmware versions (such as iDRAC9 v7.20.10.50) that specifically resolve bugs where the update job fails to start or reports incorrect "busy" statuses.
Are you seeing this error while manually uploading a file or while using the Lifecycle Controller at startup? iDRAC10 Version 1.20.25.00 Release Notes
This error message (SUP0108) typically appears in Swarm or Kubernetes environments (like Docker Enterprise or Mirantis Kubernetes Engine) when you try to update a service while a previous update or deployment is still running.
Here are the best ways to resolve it, ranked from the easiest to the more forceful solutions.
