After Delete Avast one no chance to install again.

I Deleted Avast one essentials successful by an official software. Trying to install again I always received this message:
“Avast installer cannot continue because the last Avast operation was performed without restarting. Please reboot and run installer again.”
I rebooted for several times without any success. Also I tried the official “Avastclear”-program without success.

What can I do more? Thanks for helping me

hello,and welcam to avast forums,to fix this problem,please run avast clear in safe mode,then try to install avast,i wish you good luck