“Error: [NodeId: Apply-Orbit-File] error in opening zip file”

I just downloaded the snap,and two images from this site.

now I want to do S-1 TOPS coregistration
on first tab I choose the master image but the Read(2) tab doesn’t work, before choosing the slave image I get an Error 443 Connection time out!

I am using windows OS, with 32G RAM

appreciate any help,thank you

Seems like the orbit database was not available or accessible. Maybe you can make sure that your firewall allows snap64.exe internet access (url).

besides that, the TOPS Coregistration is quite computationally intensive, I recommend to split it into single parts, especially the reduction of bursts saves a lot of time and avoids errors. An example is given in this tutorial: Sentinel-1 TOPS interferometry