Hello,
sadly we were unable to reproduce your issue so far.
The log file for the component responsible for registering Avast as an AV provider in windows security center is also missing. Please, could you go to "Menu -> Settings ->Troubleshooting -> Logs", enable Debug logging, and then perform "Repair app" just above the logs section? After the repair is complete (will prompt for reboot), please generate and send us new support package, hopefully the required logs should be present this time.
Also, if the repair does not fix the issue, I would suggest to use
Avast Clear to completely remove Avast from your system, and then reinstall it to standard path ("C:\Program Files"). Using non-standard installation paths is discouraged by Microsoft as can be read i.e.
here.
Thank you very much for your cooperation!