Hi, we are experiencing a strange issue whilst trying to deploy the K2 Smartforms application onto our SharePoint site. We run the AppDeployment.exe wizard to install the app, which completes successfully. However, the app does not show in the SharePoint add an app section. We are running SharePoint 2016 on Windows Server 2016. The K2 Blackpearl server is 2012. K2 Smartforms version 4.16060.2000.3. Im not sure what we are doing wrong?
Can you sign into SharePoint site (App catalog site) with same account that you deployed the app through the AppDeployment.exe tool? Please check if it's showing under this account. I would also double check the deployed account has full rights to the App Catalog, see K2 for SharePoint App Upload Permissions.
It might be possible that this is related SharePoint CU patches, see MS post link below.