Exceeded the maximum number of concurrent users allowed!

Error: Exceeded the maximum number of concurrent users allowed!

• Where can I check current number of users?
• If I get following error, without rebooting the Server, how can I reset the users account?

Fix:

Restart the ASA service on the server or your standalone setup.

1. Click on Start button than select Run option
2. Type Services.msc
3. Click on Ok button
4. Look for "ASA License (AMANO)" services 
5. Select Restart option from your top left side.