Troubleshooting: "Object reference not set to an instance of an object" when logging into ArcMap

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Version: 10.2.1c and 10.2.1c SP3

Responder Overview > Troubleshooting Responder > ArcMap > Troubleshooting: "Object reference not set to an instance of an object" when logging into ArcMap

Problem: MSMQ is not installed on the client machine.

Fix: MSMQ needs to be installed in order for Responder Explorer to start up and run correctly. Refer to the Configuring Responder online documentation for more information.

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