Description

When user tries to Launch Studio 12 with Foundation ; user gets below error ; However if he uses the 11.2.12 URL
there is a problem with the server communication; either the application has no common algorithms or problems with the network connection.
further information to be found within the application log."

Causes

This error appears if there is an issue with the communication of the Server and Studio normally happens for the TLS setting not enabled.

Applies to

11x; 12x

Solution

1. What TLS settings customer is configured to in SQL server/FoundationServer/LMS server and Client Machine.There is IIS utility that can be used to check the same(Request from Engineering team)
2. This to check If customer is restricted to Cetain TLS for example some customers are restricted on SQL server from TLS 1.0.
3. Then make sure the required TLS for example in the above TLS 1.0 setting on Foundation, LMS and Client machines is active.
4. Enable All protocols TLS 1.0,1.0 and 1.2 on all servers as per example above except SQL(only on TLS 1.0).

Below steps need to be performed on Foundation Server/LMS Server/Client Machine

1. Run IIS crypto utility and enable TLS by checking the checkbox.
2. Run the ‘TLS Registry Entries.reg’ utility.
3. Restart the client machine..

Following Registry Keys need to be in place for client machine.

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v2.0.50727]
"SystemDefaultTlsVersions"=dword:00000001
"SchUseStrongCrypto"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319]
"SystemDefaultTlsVersions"=dword:00000001
"SchUseStrongCrypto"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v2.0.50727]
"SystemDefaultTlsVersions"=dword:00000001
"SchUseStrongCrypto"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319]
"SystemDefaultTlsVersions"=dword:00000001
"SchUseStrongCrypto"=dword:00000001


** IIS Crypto and TLS Registry Entry Utility can get it from Engineering team***

Also see attached documentation for reference.