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BigMcGuire

macrumors G4
Original poster
Jan 10, 2012
10,446
14,756
1642785138135.png


A friend of mine is unable to set disk back to Full Security because of this error. Any idea why?
 
RESOLVED:

MacBook didn't think it had wifi and there was a special problem with wifi at this location. Connected MacBook to iPhone hotspot and tried the option again - it worked.
 
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