I am unable to download either offline installer; I can download both online installers
Why ?
What errors are you getting ?
No problem here, just downloaded the avast free off-line installer.
See attached images, I changed the file name to avast_free_antivirus_setup_offline-20-9.exe for clarity.
When I click on either online installers, a new tab in Chrome opens and a dialog appears asking where to save and allows me to change file name.
When I click on either offline installers, a new tab opens for a second then closes itself with no dialog appearing.
I have successfully been downloading offline installer for years just not working today.
Update: if I copy the offline installer address, then paste in address bar for new tab in Chrome then it downloads, so only problem is clicking on original link doesn't work