> Source: [sk108434](https://support.checkpoint.com/results/sk/sk108434)

# sk108434 - SmartEndpoint GUI fails to connect to Endpoint Security Management Server with Error: "Protocol message contained an invalid tag (zero)"

| Property | Value |
|----------|-------|
| Solution ID | sk108434 |
| Date Created | 2015-10-29 |
| Last Modified | 2019-05-14 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X, R82.20, R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * SmartEndpoint GUI fails to connect to Endpoint Security Management Server because the Server is not running.
* ERROR - Failed to start Apache ActiveMQ (sasha, null). Reason: org.apache.activemq.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).  
  org.apache.activemq.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).

## Cause

ActiveMQ index file is corrupted.

## Solution

This solution requires authentication. Please log in to view the full solution.

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