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Our office door deadbolt will only unlock with a key if locked with a key. If you lock it with the key from outside and then someone tries to unlock the deadbolt from inside with the knob, it won't unlock. Same with locking it with the knob inside - you can't unlock with the key from the outside. Any suggestions?

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    Get a new deadbolt lock. This setup sounds like it was designed that way.
    – JACK
    Nov 24 at 22:30
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    If it has always been that way, get a new lock as this is incredibly unsafe - it could lead to someone locked inside during a fire. If it has not always been that way, what brand is the lock. Ideally, model # but locks usually don't show a model # externally. Pictures may help. Nov 24 at 22:35
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    @Nelson, could be true, haven't priced them myself. Code rules, though, where it rules, and being able to easily get out of a burning room and live is priceless. Nov 25 at 13:09
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    It might have been assembled with something spun wrong inside. Disassemble and rebuild… Nov 25 at 15:08
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    Having worked on locks for years, I agree with @Aloysius that there is something wrong with the lock and it might be a simple fix (disassembly and reassembly). However, i also like the recommendations to check your local codes for types of door hardware required.
    – DAS
    Nov 25 at 22:50

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