Normally, this is impossible because access is blocked both through the firewall and the \"hosts\" file. Antivirus/Defender definitely checks these things.
just FYI - i formatted my old laptop that was never connected to the internet and disabled antivirus and yet getting the error - note there is no other user in my laptops I am the only admin account - this is the only version so far working on my laptop - Adobe Acrobat Pro DC (64-Bit) 2026 (26.1.21529)
since the latest one is not working tried this one its working fine and then if the PDF is open for more than 5 mins its giving a popup and redirecting me to adobe.com/genuine.html - with a popup saying your app was disabled ....