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Unable to add the K2 for SharePoint App on SharePoint 2019

  • July 13, 2026
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Topic

When adding the K2 for SharePoint app, the following error is returned:

 

Sorry, something went wrong

The specified application identifier 3308eaff-d056-4a32-9b1d-563f81bf06f9 is invalid or does not exist.

 

ULS log shows the following errors relevant to the K2 for SharePoint app:

  • The market web service is not configured. Return null.
  • App 3308eaff-d056-4a32-9b1d-563f81bf06f9 does not exits in marketplace web service.
  • The app principal for app instance 3308eaff-d056-4a32-9b1d-563f81bf06f9 does not exists in the Marketplace


Instructions 

  1. Open your SharePoint Central Administration Site.
  2. Go to System Settings > Servers > Manage services on server
  3. Restart the following services:
    1. App Management Service
    2. Microsoft SharePoint Foundation Subscription Settings Service
  4. Re-run AppDeployment.exe