The simplest way to lock an excel file or encrypt an excel file- watch out the video.Enhance the security of your excel file with invaluable data by encrypting it with a password........check out how to encrypt a file by clicking on the link of the video

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More by videohelp4u:How to create and register bower package Basic electronics circuit schematic for full-wave bridge rectifier with diodes. How to switch higher current load that quickly turns on and off LED using MOSFET in arduino. 
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