Service not available, closing control connection.
Causes
- User limit reached
- User are not authorized to establish the connection
- Maximum connections reached
- Maximum connections exceeded
Fixes
Step 1: Limit Connections
Limit the number of connections to any one FTP site.
Step 2: Remove Items
Remove the items from the queue.
Step 3: One FTP System Running
Ensure only one FTP system is running on your system.
Step 4: Logging In The Later Time
Try logging in to the FTP Server in the later of time.