What is "Advanced Mac Cleaner" ?
I'm getting "Advanced Mac Cleaner" window when starting up MacBook. What is it? Is it safe? if not how to delete?
MacBook Pro (15-inch Late 2011), macOS Sierra (10.12.6)
No, it's not safe. No anti-virus or so-called "cleaning" apps are necessary or recommended for Mac OS.
Force Quit Safari ( command + option + esc keys).Then restart Safari holding the Shift key. If you still have problems Empty Caches (Safari menu > Preferences > Privacy > Remove all website data. (This will also remove history if you do not want to remove History open Safari Preferences > Advanced and check mark “Show Develop Menu” then choose “Empty Caches” from Develop Menu ) If the problem persists download and run MalwareBytes. Malwarebytes was developed by one of our own colleagues here in ASC. It gets rave reviews and is about the most proven anti-malware software for Mac.