TimeoutException The request channel timed out while waiting for a reply after 00:01:00. WCF web service
Add ServiceThrottlingBehavior in the config file for the server as shown below:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="ThrottleBehavior">
<serviceThrottling maxConcurrentCalls="200"
maxConcurrentSessions="100
"
maxConcurrentInstances="100" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>