I'm migrating the Sitecore 9.1.1 site to Sitecore 10.2 and encountered with below error. Any suggestion to fix this issue is helpful.

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  • Try to compare configs and dll from upgraded 10.2 to vanilla 10.2 version, you might miss something. Mar 28, 2022 at 11:33
  • I agree with @GauravAgarwal and I will suggest you to also check if anywhere in your solution, you need to register the service but it's not there. Mar 28, 2022 at 13:20

1 Answer 1


You seem to have an old file from Sitecore 9.1.1 which might be Sitecore.Messaging.GatewayService.config. This file does not exist from version 9.2 onward. I suggest that you delete this file and try again.

More importantly, you should compare clean Sitecore 10.2 with your current Sitecore upgrade setup and see if there are any files that are from 9.1.1 version. I recommend Kdiff 3 tool where you can choose two directories to compare their contents. Helps a lot to identify what is the difference in their folder contents.

  • Yes.. This was a issue. Actually in Sitecore 10.2 the DLL Sitecore.Messaging.GatewayService.config NO longer used. Deleting this dll solved this issue.
    – Bharath
    Mar 31, 2022 at 9:31

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