Ok I can now say its 100% sure its problem of IIS or SolidCP.

Any idea how to debug? No error is showing up in Event viewer, just when I type something bad for example with email

Domain, MySQL, hMailServer and Task Scheduler are working.

So now is problem to create Website which basicly was since begin almost.

Well,

since i can confirm SolidCP works with my IIS 10 servers i know it's not solidcp.

The most likely issue is still the SolidCP Server application pool user or AD configuration.

which in return doesn't provide enough permissions to create the resources it needs (which is more or less verified by the event log errors you have).

If you want i can take a look (i will have to charge for this tho, all profits go directly back into SolidCP).

Well I think I have something missing configured.. its not it Server application pool but in Portal.

This error says:

System.ArgumentNullException: Value cannot be null.
Parameter name: path1
at System.IO.Path.Combine(String path1, String path2)

Something is null. Hard to try what when it dont say which line etc.

How much would it cost to solve this for me? :O

Thanks

Path being null:

Any chance your System service is not on the same server as your Windows 2016 iis server? (as generally i seen that issue when people configured the System service on a different server then the IIS / FTP Server)

Assuming it's a portal configurational issue: it wouldn't take more then 1 hour, if it's a database issue (seems a bit unlikely at this point but given all the information i can't rule it out neither) it would be max 2 hours.

(our services by default are 75 eur per hour, but we offer packages which preserves time aswell as: 3 hours = 200, 5 hours = 300, 10 hours = 500 all our prices are no cure no pay guarantee, do note i am happy to continue to help through forum if your not interested etc, i am just providing the option as this issue continues to be unresolved for you, so i am giving an alternative.)

Well I did some progress!

1. I removed old Hosting Plan

2. I created a new Hosting Plan

3. I get error about user groups

4. I created a user group based on Configuration > Servers > IIS 10

5. I managed to create a website

Now I get these errors:

Stack Trace:
System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at SolidCP.Providers.Web.IIs70.FillAspNetSettingsFromIISObject(ServerManager srvman, WebVirtualDirectory vdir)
at SolidCP.Providers.Web.IIs70.GetSite(String siteId)
at SolidCP.Providers.Web.IIs100.GetSite(String siteId)
at SolidCP.Server.WebServer.GetSite(String siteId)
--- End of inner exception stack trace ---
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at SolidCP.Providers.Web.WebServer.GetSite(String siteId)
at SolidCP.EnterpriseServer.WebServerController.GetWebSite(Int32 siteItemId)
at SolidCP.EnterpriseServer.esWebServers.GetWebSite(Int32 siteItemId)
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at SolidCP.EnterpriseServer.esWebServers.GetWebSite(Int32 siteItemId)
at SolidCP.Portal.WebSitesEditSite.BindWebSite()

In IIS manager I can see website "Example.com (unknown)". With error icon.

Do you have any idea what can suppose this?

Thanks

EDIT: Event Viewer gives this:

[10/16/2016 9:16:17 PM] ERROR: Failed to read ASP.NET settings from example.com.
System.NullReferenceException: Object reference not set to an instance of an object.
at SolidCP.Providers.Web.IIs70.FillAspNetSettingsFromIISObject(ServerManager srvman, WebVirtualDirectory vdir)

[10/16/2016 9:16:17 PM] ERROR: 'Internet Information Services 10.0' GetSite
System.NullReferenceException: Object reference not set to an instance of an object.
at SolidCP.Providers.Web.IIs70.FillAspNetSettingsFromIISObject(ServerManager srvman, WebVirtualDirectory vdir)
at SolidCP.Providers.Web.IIs70.GetSite(String siteId)
at SolidCP.Providers.Web.IIs100.GetSite(String siteId)
at SolidCP.Server.WebServer.GetSite(String siteId)

EDIT 2:

New eventviewer error

[10/16/2016 10:20:25 PM] ERROR: The object identifier does not represent a valid object. (Exception from HRESULT: 0x800710D8)
System.Runtime.InteropServices.COMException (0x800710D8): The object identifier does not represent a valid object. (Exception from HRESULT: 0x800710D8)
at Microsoft.Web.Administration.Interop.IAppHostMethodInstance.Execute()
at Microsoft.Web.Administration.ConfigurationElement.ExecuteMethod(String methodName)
at Microsoft.Web.Administration.Site.Start()
at SolidCP.Providers.Web.Iis.WebObjects.WebObjectsModuleService.ChangeSiteState(String siteId, ServerState state)
at SolidCP.Providers.Web.IIs70.CreateSite(WebSite site)

EDIT 3: Those error happens even with hosting plan for only PHP

EDIT4: Adding img from DB