Here is the easy solution for the following Avast error: Unable to start scan. There are no more endpoints available from the endpoint mapper
Fix #1
Download the newest update file for your version of Avast here: https://www.avast.com/en-us/download-update
Once it is installed restart your computer. When it starts back up open Avast and click on the “Fix Now” button. Avast should now be able to fix the problem and get back to work.
If that doesn’t work then try Fix #2.
Fix #2
Navigate to Add/Remove Program or Programs and Features (Control Panel) depending on your version of Windows.
Find Avast in the list.
Right-Click on Avast and click repair. Allow the process to complete and follow any on-screen prompts. Once this is complete restart your computer.
You might need to click the “Fix Now” button when Avast starts back up. If it doesn’t work then try Fix #3.
Fix #3
If that doesn’t work then it is likely the a component of Avast has been damaged beyond repair. You will need to uninstall Avast and reinstall it.
However I do not recommend uninstalling it the normal way. Use the official Avast removal tool to completely remove all Avast files and services from your computer. You can download it here from the Avast website: https://www.avast.com/uninstall-utility
Run the utility and follow the prompts. Once it is finished restart your computer and reinstall Avast.
Avast is not showing in Add/Remove Programs list. Am getting the message when trying to run full scan. Smart Scan ran fine. I should mention I am in Safe Mode trying to clean some issues.
After all else failed and I had spent hours trying to restart Avast, Fix #3 restored the service. Laptop now protected again. Many Thanks.