[[Fixed in 5.89.9401] CCleaner 5.89.9385 immediately closes on launch]

2 hours ago, harwich said:

I think I know what the problem is. If I am connected to the internet CC closes immediately.  If I am not connected to the internet CC does NOT close  immediately.  It must have something to do app when it connects to the internet.

Mike

I agree with Harwich.  This is the work-around steps I'm using until such time the latest version of CCleaner is fixed: 

Step 1 - Disconnect from the Internet. 

Step 2 - Open CCleaner.  It should stay open at this point. 

Step 3 - Reconnect to the Internet and run whatever sub-program(s) within CCleaner you want.

Windows 10 Pro Version 21H2

CCleaner - The latest version to date.

[CCleaner Crash]

After today's update, paid CCleaner Pro no longer works.