I have exchange 2013 in my environment with two nodes and these nods have CAS and MBX role.
Their name are MX1 and MX2. when i try to access ECP with https:\\mx1.domain.com\ecp Exchange control panel meet with me. i type my username / pass then just blank page appers and nothing else but when i try to access it with https:\\mx2.domain.com\ecp everything works fine.
and other thing if i try to access ECP with https://mx1/ecp/?ExchClientVer=15 again everything works fine again...
i dont understand why i need to add this for access to ECP on MX1 "ExchClientVer=15 " what do i miss ? what i need to check ?