When you download the emulator, you encounter "Download Error: environment problem", please refer to the following guide to solve the problem:
Offline Installer (For Download Network Errors)
1. Press the Windows and R key on your keyboard at the same time. Type sysdm.cpl into the input field and hit Enter or press Ok.
2. In the new window that opens, click on the Advanced tab and afterwards on the Environment Variables button in the bottom right of the window.
3. After copying the TEMP value, double-click TMP, paste the copied TEMP value and save it. Make sure the two values are the same.
Consult "online customer service" via and get more help