Hello,
please if this issue is happening to you, and you are willing to help us with diagnostics:
1) open a Terminal app, run the following command
sudo kextutil -t -v 6 /Applications/Avast.app/Contents/Backend/drivers/AvastPacketForwarder.kext &>~/Desktop/avast_kextutil.log
this will create avast_kextutil.log file in your Desktop folder containing details about why loading our kernel extension has failed
2) immediately afterwards generate Apple’s diagnostic file by running command
sudo sysdiagnose
follow the instructions and read about what the file will contain. If you are comfortable with sending this file to us, upload the resulting huge file (path where it resides will be printed to the terminal when the command finishes, also it may be opened in Finder) somewhere (dropbox, google drive, icloud, see below for instructions for the latter) and send me the avast_kextutil.log and a link to the sysdiagnose file to ondrej.kolacek@avast.com . I will dig into the possible reason why this is failing for you, try to find out if we can somehow fix this, and report the issue to Apple in case we have not done so for the found reason.
or 2a) if you are not comfortable with sending the sysdiagnose file, use Feedback Assistant app to report the issue to Apple. You do not have to add the sysdiagnose file, since Feedback Assistant will generate it for you during the send process. Include the content of avast_kextutil.log and mention that load of kernel extension has failed in the feedback. Please send me avast_kextutil.log to ondrej.kolacek@avast.com anyway.
Regarding sharing the file, you can go to
https://www.icloud.com/iclouddrive/ , log in, use the upload button (the cloud icon on the top) to upload the file, then select the uploaded file, use the Share file button (person with + icon on the top), click on Share options, select Anyone with the link, permission View only, click on Share button, this will provide you a link like
https://www.icloud.com/iclouddrive/0gN2b0mof1OQAFWAFWARoA#test%5FFileto send to me.
Thank you for your assistance.
Kind regards,
Ondrej Kolacek