@pmallas Actually in the Proxy Settings. It was configured to use the System Proxy settings i.e. Use System Proxy Settings radio button was checked . So, i changed it to No Proxy and everything worked fine.
Reading thoroughly all comments, I’d have to note that I encountered the same problem when trying regular Apply-Orbit-File on SLC data.
I followed all previous recommendation in terms of updating SNAP, kits, S1TBX… As far as I’m concerned the version of SNAP is SNAP Desktop implementation version 8.0.5, and Sentinel-1 Toolbox S1TBX version 8.0.4.
However, applying AOF on SLC data covering the sensing period of April to June 2021 still returns unavailable POEORB files and suggests downloading them from gnss directly.
Note that automatic download of POEORB files for January to early beginning of March doesn’t lead to any error in batch processing.
Could you please let me know how to solve the problem?