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Software Installing question

mark I thomas
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Joined: Apr 07, 2008
Posts: 86
I downloaded a software and tried to install it on PC. When I clicked the .exe it pops a windows saying

"The publisher could not be verified. Do you want to run it (This file does not have a valid digital signature...)" ?

I hit "Run" and everything was OK.

What's the cause of this message ? What will be the worst consequence when we hit "run" in this case ? will we lose any feature of the software if we hit "run" to install it this way ?

Jesper de Jong
Java Cowboy
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Joined: Aug 16, 2005
Posts: 14269
    
  21

Windows tries to protect you by not letting you run random programs downloaded from the Internet without warning you. The program doesn't contain a digital signature, which means that you cannot be sure that the program really comes from who you think it comes.

What the worst consequence can be? That the program is not the real program that you think it is, but instead is a virus or malware made to look like it is from some trustworthy party. If it is a virus or malware, it can in principle do anything, including deleting the entire contents of your harddisk or steal private and personal information about you.


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Peter Johnson
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Joined: May 14, 2008
Posts: 5836
    
    7

When I clicked the .exe it pops a windows saying

"The publisher could not be verified. Do you want to run it (This file does not have a valid digital signature...)" ?

You can turn this off by right-clicking the EXE and select Properties. At the bottom of the dialog is an Unblock button - click that. I recommend you do that only for apps that you trust. This is a Windows security feature - it tracks where the file originated and if it did not come from your PC (that is, it came from the internet or even from a network drive), it will not run the app without first checking with you (and as Japser mentioned the app might not actually have been started by you and thus could be a virus).

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subject: Software Installing question