Today I tried to implement an AJAX enabled ASP.net web application on the Windows 2003 server. Of course, I have to install the AJAX 1.0 extension framework on the server first. So I got in the server, and copied the AJAX framework installer file (aspajaxextsetup.msi) from the network driver. But when I double clicked the .msi file, I got the following error message.
“Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item.”
First I thought it was my Windows NT network authentication issue. But I double checked, and my logon name was the administrative group of this server.
Second, I thought this file was corrupted, but it ran well on my local machine and I just copied it from there.
When I right click the file to check the properties, I found out there was an additional paragraph at the bottom of properties window (as the screenshot below, you can click it to enlarge), which reads
“Security: This file came from another computer and might be blocked to help protect this computer.”
I do not know which action I did to trigger this file flagged as such, or it might have been designed as such way by Microsoft before I downloaded from its website. Anyway, the good news is that I also saw a button besides it with the label of “Unblock”. So I clicked this magic button, and return to the windows explorer. When I double clicked the .msi file again, and the installation ran well.
Conclusion: I First time saw such error message, and hope this blocking mechanism can help stop the unwanted malicious software installed on the Windows 2003 server. And of course, please remember how to unblock the software you trust.
Thanks a ton! I’ve been driving myself crazy, rebooting and checking security.
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