A deployment or retraction is already under way for the solution, and only one deployment or retraction at a time is supported

A deployment or retraction is already under way for the solution, and only one deployment or retraction at a time is supported

Issue: while we are deploying the solutions in SharePoint, sometimes we face the issue that the solution will not be deployed and the error would be” A deployment or retraction is already under way for the solution, and only one deployment or retraction at a time is supported”

Cause: After Digging , come to know that, The reason behind the issue is the timer job is created for the deployment but not running, you will be unable to redeploy or retract the solution due to that.

Solution: please follow the below steps to resolve the issue.

1.    Go to Central Admin -> System Settings -> Manage Farm Solutions.

2.    Cancel the deployment for your present solution. It may show the status failed or deploying, which means deployment is not successful.

            

3.    Now again try to redeploy the solution

 

Please Comment if you need Any Help.Your Feed back is always Welcome.I Am Happy to Help !!!!!