Not able to shut down my laptop

My MacBook Air performed an update. When I try to shutdown, it tells me that Logos 6 will not allow it to be shut down. I try to quit and nothing happens. I tried to move to trash and still nothing. I cannot shut down my laptop at all. This is very disturbing.
What can I do to correct this problem?
Donna
Comments
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There are tips here on how to "kill" an application (that is, forcibly turn it off when it has stopped responding).
http://osxdaily.com/2012/03/02/force-quit-mac-apps/
I would suggest doing that, restarting your computer to allow it to complete updates if need be and then see whether the problem is gone or happens again.
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If all else fails....
Quit every other application just leaving the miscreant running.
Press and hold the power key 'till the machine switches off.
tootle pip
Mike
Now tagging post-apocalyptic fiction as current affairs. Latest Logos, MacOS, iOS and iPadOS
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Welcome Donna! [:)] Sorry you are having troubles. [:s]
Either of the two suggestions should work. I would start with a "force quit," which is something that would be good for you to know about anyways. Sometimes safari needs a "force quit." Forcing a shut down is ok to do when you have to, but should be a last resort.
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