-1 error is generally ad related (which also means creating a new mailbox won't work).
Soap errors shown indicate the SolidCP Server is either not updated or it's still caching WebsitePanel Server (try an iisreset on the SolidCP Server if your 100% sure it's properly updated).
When i`m creating an User in a Hosted Organizations, then its OK and its created, i see that in the Users on the Domain Controllers too.
When i want to create a mailbox, then i got this error: 
When i want to create a Hosting Spaces then i got this error:
"System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> Unknown error (0x80005000)"
The servers (SolidCP) are updated, i`m using Windows 2008 R2 and 2012 R2 servers and Exchange 2010 SP3 Update Rollup 16 (on Windows 2008 R2).
Something is strange here :(. Can you PM me with a SkypeID or something similar to talk about the possible help for your fee?
Thanks.
Hello,
2008 and 2012 R2 with Exchange 2010 means you most likely ran into the asp.net 4.5 bug with Exchange 2010.
The only 2 workarounds for that is either remove asp.net 4.5 or work on asp.net 2.0
I did recently make a SolidCP Server module for asp.net 2.0 to address this issue. (it's currently only available in our git source).
I can implement that for you.
You can ping me at skype on user: Key4ce
Then i can get things sorted for you.
Regards,
Marco
