Disk Usage at 100% - Avast Iscache.dat

Recently, whenever I wake up my computer from sleep, the Disk usage goes to 100% and stays there for anywhere from 10-40 minutes.

Performance meter says the Process using all the Disk is System, but the file is …\AVAST\Iscache.dat. It’s writing 5-6 Mbits per second here.

System is too important a process to halt, and not sure why it’s accessing an Avast file. Avast itself doesn’t show any activity.

This really impacts performance until the Disk usage drops. Help!

Do Repair Avast:

  1. Avast GUI → Settings → Troubleshooting
  2. Click on ‘REPAIR APP’.
  3. Follow instructions.
  4. Reboot.