I had a CSV file (workbook) that I password protected. Up until yesterday, I was prompted for a password to open this file, but this morning, I was not longer being prompted for a password. I tried opening the file in Excel 2013 and 2010 with the same result. 

I tried to create a new CSV file (in both versions) and password protect the file (similarly to what I had done before) but the file did not retain the password protection.

Has anyone had problems password protecting a CSV file? Is there somewhere documented that .CSV files do not support password protection.

I am a little puzzled why it was working for several months, but now it is not.

Thanks

Andres

A CSV file is not an Excel workbook: it is a plain text file - you can view and edit it in Notepad. Hence you cannot password-protect it from Excel.

Hi,

I agree with Mr. Hans, we cannot password-protect it from Excel. I suppose that your CSV file may be encrypted with some code/third-party program. Please see the sample below:

https://social.msdn.microsoft.com/Forums/en-US/e2e21aa2-0e48-4188-a63f-085fecb55b71/csv-file-encryptiondecryption

Hope it's helpful.

Regards,

George Zhao
Forum Support
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Hi,

Just checking in to see if the information was helpful. Please let us know if you would like further assistance.

Thanks

George Zhao
Forum Support
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