Setting-up password in a drawing is easy but can be crucial if you do not remember it . If you forget your password, chances are that you will lose the drawing permanently if you do not have a backup. Before assigning a password to a drawing, many have recommend to create a backup for the drawing or write down the password in a notebook or etc. I prefer to use a similar and strong password rather than changing it from time to time. Honestly I do not really set password for my drawings as I am working on a shared network. Nevertheless it is good to know about this function as you may never know one day you may need to use it.
To set a password for a drawing, you should go under Options>Open & Save. If you look at the bottom left corner, you should be able to see “Security Options”. By clicking on it, a pop-up will appear on your screen to prompt you for a password. Set your password for that specific drawing and click “ok” to apply. Just note that in order for you to see whether the password has been set, you need to restart your AutoCAD. It will only prompt to ask for the password once and if you continue to open that same file again and again, AutoCAD will not prompt you for the password unless you restart your software. Another important thing to remember as I have emphasized earlier is to create a backup copy so that if you forget your password you do not have to worry. There may be some external software’s that you can use to retrieve your password but I think you need to pay for it.
I will upload some images for you to see if you are still unsure.
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