IMac 2011 pop up after starting...

I recently had to use time machine, because my IMac has acted, now, whenever I start up I get this pop up on the screen

named "navigation.json" - locked. I try to use my adware removal but it will not fix it, you can not delete. The only way to get rid of

This is to close the window, but then it will appear again when I restart, any suggestions on how to remove it?

A

One of your login items may be responsible. Please select the login items tab in the users pane and groups of system preferences. Remove all items that you do not recognize. If you don't know which ones to delete, double-click on each to test.

If a connection item is dimmed and cannot be deleted, click on the padlock icon in the lower left corner of the window and enter your login password when you are prompted. Then try again.

To avoid confusion, please note that checking or unchecking the box next to a point of idle connection not she. You must remove the item from the list.

B

You must get rid of your software "anti-virus" or "anti-malware", whatever it is. All these software are at best useless.

Tags: Mac OS & System Software

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