We’re experiencing an issue while installing our desktop apps. Avast starts scanning the file and then a “ShellExecuteEx failed; code 299.” appears. The error disappears automatically and Avast starts scanning the file again, this happens 3 times before the installation of our software continues.
We recently had to renew our code signing certificate and since we used it, we’ve been experiencing this issue.
I’ve seen on the “Avast Threat Lab - File whitelisting” (https://support.avast.com/en-eu/article/Threat-Lab-file-whitelist) page that a software vendor can submit their digital signatures for white listing but I couldn’t find any place to submit digital signatures, only single installers. We’ve got hundreds of installers using the same signature so it would make more sense to get our signature white listed.
Here’s a virus analysis of our app:
https://www.virustotal.com/en/file/91bbcbb5f2ae365ce7a8f8bf68ecbe15af056ddf53e9913bd177e2c7be574803/analysis/1528286974/
One of our software applications can be downloaded from: http://downloads.school-communicator.com/downloads/apps/d6_80_86e5cc8768c70c5e1996db49c83d1677.exe
Please whitelist our digital signature.
Thanks!