Cannot unlock security & privacy in system preferences

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hey guys, did little searching cannot find specific, if guy can point in thread answers awesome

have late 2013 macbook pro retina 15 750m

anyways, cannot unlock little lock in security & privacy tab. when press little lock unlock it, asked input password (i don't have 1 press enter)

after unlock , lock again. know do?

graphics awful when using integrated card. mean when press mission control button, choppy.

thank guys.
 

you have discovered can't tasks require non-blank password admin account (a blank password not acceptable tasks)
if need things, (and may find need both security , privacy :d ) provide user account real password. can short , simple - needs other blank.
reminder - once add password, later decide don't want password, there's no simple way return blank password account.

come if can't add password (i don't think able unlock users & groups pref pane "change password" )
 


Forums Macs macOS OS X Yosemite (10.10)


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