Hi Cesar;
Thanks for reporting this issue!
1) In order to analyze the cause of the problem, please send a zip file of the installation log (AppeonInstallLog) of the installer to us for analysis:
C:\Program Files (x86)\Appeon\PowerBuilder Installer\logs
2) Please check whether the download network is normal. Make sure that the network is normal and try to download .Net SDK 6.0.300 a few more times and then check whether the download failure still exists.
3)Please confirm whether netsdk60-300-x64.zip can be downloaded normally by entering the following URL directly through the browser: https://file.appeon.com/download/APB/2022/Public/SetupPrerequisites/netsdk60-300-x64.zip.
4) Please check whether your local antivirus software or security Settings block the download of the installer.
PS: In order to better track and handle the case, please submit a ticket at https://www.appeon.com/standardsupport/newbug. Thanks!
Best Regards,
Mora