Question: SIP Domain in Lync 2010/2013 are not adding through HC panel ?
Such problem appears due to insufficient privileges assigned to the user under which HCRemoting Service is running on the Lync 2010/2013 Server.
Recommendation is to run HC Remoting Service under Domain\Administrator account. You can access Services MMC from : Start >> run >> services.msc .
If you do not want to use built-in Domain\Administrator account and want to run HC Remoting service under new user then this user must have to be the member of following groups:
- Domain Admin
- Domain Controller