1

OS: Windows 10 Pro Version 1703 (Build 15063.540) 64-bit
OS Update Installed: Aug 09 2017
Avast: 17.5.2303

Error: AavmRpch.dll is either not designed to run on Windows or it contains an error. Try installing …

Thanks,
Ram

2

Please try the following: Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204

If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A

3

Thank you! The repair did help. (I’d uninstalled and reinstalled previously which did not help). Strange but thanks.

4

You’re welcome. :slight_smile: