Visual COBOL or Enterprise 2.3.x can fail when installing on a Windows Operating Systems that use different locale to English.
Reviewing the installation log file, typically located in path:
Entries such as the following are seen:
[1290:0F18][2017-05-16T11:21:13]: MUX: Stop Block: IsoShellLPBlock : A matching Microsoft Visual Studio Shell (Isolated) language pack is required, but it is not installed on this computer. Please install the Microsoft Visual Studio Shell (Isolated) language pack for this language and retry.
To resolve the issue the relevant language pack should be installed, see Microsoft’s download website e.g. URL: https://www.microsoft.com/en-us/download/details.aspx?id=30671.