New developer toolkit for CRM 2011/2013/2015/2016

Hi All,

Do you remember, way back in 2013 we had a developer tool kit included in the SDK itself, which was later removed.

We had a good news, the developer toolkit had been made available Jason Lattimer.
Thank you for developing this and helping the fellow developers to carry out their work with ease.

You can download from the below link…

Developer tool kit


Things to note when registering a Plugin/custom workflows in Sandbox mode

Sandbox mode can also be referred isolation environment. Lets us see some Pros and Cons when registering the plugins/custom workflow activities in Sandbox mode.


  • Can make use of the full power of the Microsoft Dynamics CRM SDK
  • Have access to external endpoints like Azure Cloud Services.
  • CRM collects run-time statistics and monitors plug-ins and custom workflow activities that execute in the sandbox.
  • If code exceeds CPU Memory or is otherwise unresponsive, it would be killed by the platform
  • More secure, collects run time statistics and reporting
  • Platform collects runtime statistics and were populated after 30 mins to 1 hr
  • Can access the network through HTTP, HTTPS protocols
  • Anonymous authenication is allowed for plugins


  • Access to localhost (loopback) is not permitted.
  • IP addresses cannot be used, web address requires DNS name resolution

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