Agent Unreachable due to Agent was blocked by OMS

Resolving steps for "Agent Unreachable due to Agent was blocked by OMS"

1. Once you have seen or Received alert for Agent Unreachable, Check the agent status in EM , if it shows that agent is blocked , then follow the below steps to unblock the agent from OMS.  

2. Navigate to Agent Home page and click Agent drop down list and click Resynchronization. 

3. Click Continue on the Next Page.

4. Click Ok once you confirmed about the Agent Name and click Ok to Proceed.

 5. Once the Job created, click the Job Name and Monitor the Job of Agent Resync.

6. After Few Mins the Agent Resync Job will complete Successfully and you also can see the same.

7. Now Come to the agent Home page and click the glass button near to status of Agent which is below, which will run Diagnostic Test

 8. Once Diagnostic Test completed , the agent will back to normal status like below.