Dreaming of opening a lock with a key is both positive and negative sign as per dream meaning and interpretation. The dream means you will find solution to a pestering problem. It also means success. Dreams of lock with a key also mean you finding secrets about someone and it will open up a huge problem in life. It also means you will find out about something that was hidden from you.
Dream of opening a lock with a key and you are doing it in the dream means you will open things that were closed for a longtime. It also means discovering new information or finding out about a family secret.
Dreams of opening a lock with a key and you are not seen in the dream means you will be investigated for something. It also means in your absence someone attempting to find out your secrets or things you have hidden.
Dreaming of opening a lock with a key and it is not getting opened means you will make several unsuccessful attempts to achieve something. It also means frustration.
Please not that watching treasure movies or anything to do with opening a lock with a key during daytime on screen or reading etc and then having the dream has no meaning. It is a mere extension of an intense daytime activity. The dream will have a meaning only when it happens without any daytime influence.
Here are a few more possible interpretations of opening a lock with a key dream:
New Opportunities or Solutions: If you are successfully unlocking the door, it might indicate that you are on the verge of discovering something valuable or overcoming a challenge. It could represent personal or professional progress.
Gaining Insight: Opening a lock can symbolize gaining clarity or understanding about a situation that has previously been confusing or elusive.
Control and Power: Having the key in your dream suggests that you have the power or resources to control certain situations in your life, particularly those that may have felt "locked" or unreachable before.
Personal Transformation: The act of unlocking can signify inner transformation or self-discovery. You may be opening yourself up to new experiences, emotions, or parts of your personality.
Secrecy or Protection: If the dream involves unlocking something hidden or private, it might relate to uncovering secrets or gaining access to protected or sensitive information, either in your life or someone else's.