Profile Installation falis with Cannot retrieve SCEP identity error

Question

While Installing an MDM profile at the time of certificate enrollment we get this error
iPhone lockdownd[52] <Notice>: 00201000 _select_socket: receive secure message timeout!
and then profile installtion fails with network error and IPCU shows this error log
Jan 13 14:23:17 iPhone profiled[476] <Notice>: (Error) MC: Cannot retrieve SCEP identity: NSError:
          Desc   : A network error has occurred.
          Sugg   : The request timed out.
          US Desc: A network error has occurred.
          Domain : MCSCEPErrorDomain
          Code   : 22005
          Type   : MCFatalError
          ...Underlying error:
          NSError:
          Desc   : The request timed out.
          Domain : NSURLErrorDomain
          Code   : -1001
          Type   : MCFatalError
Jan 13 14:23:17 iPhone profiled[476] <Notice>: (Error) MC: Failure occurred while retrieving profile during OTA Profile Enrollment: NSError:
          Desc   : A network error has occurred.
          Sugg   : The request timed out.
          US Desc: A network error has occurred.
          Domain : MCSCEPErrorDomain
          Code   : 22005
          Type   : MCFatalError
          ...Underlying error:
          NSError:
          Desc   : The request timed out.
          Domain : NSURLErrorDomain
          Code   : -1001
          Type   : MCFatalError
Jan 13 14:23:17 iPhone profiled[476] <Notice>: (Error) MC: Installation failed. Error: NSError:
          Desc   : Profile Installation Failed
          Sugg   : A network error has occurred.
          US Desc: Profile Installation Failed
          US Sugg: A network error has occurred.
          Domain : MCInstallationErrorDomain
          Code   : 4001
          Type   : MCFatalError
          ...Underlying error:
          NSError:
          Desc   : A network error has occurred.
          Sugg   : The request timed out.
          US Desc: A network error has occurred.
          Domain : MCSCEPErrorDomain
          Code   : 22005
          Type   : MCFatalError
          ...Underlying error:
          NSError:
          Desc   : The request timed out.
          Domain : NSURLErrorDomain
          Code   : -1001
          Type   : MCFatalError
          Extra info:
              isPrimary = 1;
Any help will be appreciated....

Answer 1

Change SQL TCP Port:
From SQL server, start SQL Server Configuration Manager
Double TCP/IP to open TCP/IP Properties Window.
Go to IP Address Tab and you can see dynamic port allocated
I normally remove port from TCP Dynamic Ports field and set a static port 1433 to TCP Port field.
Firewall:
Add this port to Inbound firewall rule (SQL Server)
Windows Firewall with Advanced Security > Inbound Rules
Add new Rule
Rule Type Port
Protocol and Port TCP, Specific Local Ports > 1433
Action Allow the connection
Profile Domain, Private, Public
Name SQL01 for QM
Good Luck