De Requisitos do sistema do Emulador do DocumentDB :
The DocumentDB Emulator has the following hardware and software requirements:
- Software requirements
- Windows Server 2012 R2, Windows Server 2016, or Windows 10
- Minimum Hardware requirements
- 2 GB RAM
- 10 GB available hard disk space
Portanto, provavelmente há algumas dependências ausentes.
Há uma página de feedback que pede suporte para versões anteriores do Windows , indicando:
The installer shouldn't run on unsupported platforms. Right now it goes ahead and installs and then the emulator fails with an obscure error about api-ms-win-core-path-l1-1-0.dll
E uma resposta
Thanks for the feedback and we will consider that. Our backend code uses some crypto APIs that are not available on Windows 7 hence it's not supported currently.