Exchange Admin Center failed to open when trying to log in remotely (error 400 is shown). Locally it works fine.
Access to EAC is automatically disabled by Parallels during package installation because it is a recommendation of Microsoft:
It is recommended to completely disable access to the Exchange Administration Center by modifying the Set-ECPVirtualDirectory –AdminEnabled parameter on all tenant-facing Client Access servers.
If you need to enable remote access to EAC for some reasons, steps are as follows:
execute the following command from Exchange Management Shell:
Get-ECPVirtualDirectory | Set-ECPVirtualDirectory -AdminEnabled $true
- restart IIS on CAS servers
Set-ECPVirtualDirectory cmdlets can be found here: