Alright, if that command works it's most likely not an issue of a faulty installation (atleast not for that command).
If you want you can also try our premium support where we can take a look for you via rdp / sharing desktop session.
i see this log in audit log
00:00:00
Account Name: demo0100000
00:00:00
Display Name: Demo One
00:00:00
Account Type: Mailbox
00:00:00
Org ID: 3
00:00:00
Org Name: testdomain.net
00:00:00
EXCHANGE_GET_EXCHANGE_MAILBOXPLAN
00:25:38
The underlying connection was closed: An unexpected error occurred on a receive.
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
at Microsoft.Web.Services3.WebServicesClientProtocol.GetResponse(WebRequest request, IAsyncResult result)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at SolidCP.Providers.Exchange.ExchangeServer.CreateMailEnableUser(String upn, String organizationId, String organizationDistinguishedName, String securityGroup, String organizationDomain, ExchangeAccountType accountType, String mailboxDatabase, String offlineAddressBook, String addressBookPolicy, String accountName, Boolean enablePOP, Boolean enableIMAP, Boolean enableOWA, Boolean enableMAPI, Boolean enableActiveSync, Int64 issueWarningKB, Int64 prohibitSendKB, Int64 prohibitSendReceiveKB, Int32 keepDeletedItemsDays, Int32 maxRecipients, Int32 maxSendMessageSizeKB, Int32 maxReceiveMessageSizeKB, Boolean hideFromAddressBook, Boolean isConsumer, Boolean enabledLitigationHold, Int64 recoverabelItemsSpace, Int64 recoverabelItemsWarning)
at SolidCP.EnterpriseServer.ExchangeServerController.CreateMailbox(Int32 itemId, Int32 accountId, ExchangeAccountType accountType, String accountName, String displayName, String name, String domain, String password, Boolean sendSetupInstructions, String setupInstructionMailAddress, Int32 mailboxPlanId, Int32 archivedPlanId, String subscriberNumber, Boolean EnableArchiving)
Unfortunatly thats still a generic error stating that something is going wrong with the connection it self (it usually means your looking for a different log / error AD or Exchange related).
