Hi Sonias,
Sorry to hear about the trouble. As mentioned that Export PDF feature is causing the error "Not connected to internet", so is that conversion was tried through the web browser Adobe Document Cloud or through Adobe Reader desktop application?
You may check the following steps-
- Change web browser and try conversion through a different one.
- If you are using free desktop application Adobe Reader DC then you may Sign Out and Sign In back with your current Adobe ID and password in Adobe Reader and check for any pending updates from Help>Check for updates. Reboot the machine after the installation of any updates and see if this makes any difference.
- For testing purpose, please connect the computer to a different network environment like a guest wired/wireless network, or mobile hotspot and try converting the PDF.
- You may also refer to File conversion error | ExportPDF Link: https://helpx.adobe.com/acrobat-com/kb/file-never-converts.html
If nothing works, then follow the instructions given in the similar discussion here: Adobe Export pdf says no internet connection and find the list of Adobe ports and URLs with you via the private message which you need to whitelist on the network and firewall, share it with your IT team.
Let us know if the solution provided above doesn't help!
Regards,
Akanchha