In Central Administration > Operations > Solution Management, Check if all the K2 solutions are in deployed state.
Try to go to this url by replacing with your server name http://<mossservername>/_admin/K2/Administration.aspx
Thank you for the answer.
http://<mossservername>/_admin/K2/Administration.aspx
→It is not possible to access it.
→I logged in as following URL and confirmed "Solution Management" .
http://<mossservername>/_admin/applications.aspx
However, the status of "k2worklistwebpart.wsp" and "k2myprocesseswsp.wsp" was "Deployed".
"Central Administratin" is hosted by "Index Server".
But k2 isn't installed in Index Server.
k2 is installed in two WFE Server and is Cofigured with "k2 for sharepoint(MOSS)" and "K2 Documentation" in two WFE Server by "K2 Configuration Manager" now.
Should I install K2 in Index Server?
On Solution management page, you MUST have all the following solutions in Deployed state.
k2 for sharepoint - core components.wsp
k2 for sharepoint - management console.wsp
k2 for sharepoint - process portals.wsp
k2 for sharepoint - web designer.wsp
k2 for sharepoint - workflow core.wsp
k2worklistwebpart.wsp
To get "K2 for SharePoint Tab" in central admin, please run the setup manager on the CA server.
You will need the following rights for the K2 Central Admin account
Full Control permissions on the Central Admin Site Collection.
Admin rights on K2 server