HELP - Glass appears very dark on renders.

[wwojtek_sstefanowski]

Hello,
When rendering my project, the glass is very dark. How can I fix it? I want it to appear just like I can see it on the layout. 
Thank you!

[mari.shimode]

Hi @wwojtek_sstefanowski,

Would you please tell us what Autodesk software you're using so we can move your question to the most appropriate forum? Thank you.