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If users view documents on my website (for example a pdf file that represents some confidential information), is there anyway I can prevent them from saving the document locally?
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Enter "gpedit. msc". Under "User Configuration\Administrative Templates\All Settings" look for a setting named "Prevent access to drives from My Computer" and double-click on it. Select "Enabled" and "Restrict all drives", and click OK.
Using Registry EditorRight-click on Explorer, select New > DWORD (32-bit) value and name it as NoViewOnDrive. Next, double-click on it, set the value as 4 (to prevent C drive), or 3ffffff (to restrict all drives). Then, click OK to save the change. That's all!
In a word - no.
Once you've sent the data to their browser they can do what they want with it.
You could use some Flash Component or Java Applet to make it harder to save the information but they could still take a screenshot of the browser and save that locally.
The only practical approach is to ensure only trusted users can access the information (which you're probably doing already).
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