conradauthor

Greetings, Security may be the wrong place for this, but it does relate to keeping my computer safe. My laptop runs Win 10, 64 bit. I use Malwarebytes antivirus. I use CCleaner Pro. In the last 3 weeks, a problem has developed. The CCleaner icon disappears from the task bar and I am unable to run the program. This includes using Windows Explorer to go directly to the .exe file. I tried downloading the CCleaner file and reinstalling it. This is when I discovered I have also lost Admin privileges on my Admin account. I used Safe Mode to delete the .exe file then reinstalled CCleaner. It worked for less than 48 hours before CCleaner stop working again. I have gone through this process twice. Today, CCleaner does not even install. And my system still tells me I have no Admin privileges. To be clear, I have Admin privileges to install software, and Windows says my account is an Admin account. But I have no Admin privileges when I want to rename any folder on C:, or delete a file. I can make changes to user created files, but not computer/software created files. The loss of Admin privileges is quite specific. A Malwarebytes scan (pro version) has found nothing amiss. There have been no software installations to cause this. There have been no hardware additions either. I very much need advice to get this resolved. Thank you.