Re: Zip file blocked, but no Unblock in properties?


The zip file is located on my primary hard disk, an NTFS drive.
It was created on a FAT32 drive, if that matters. I have also tried opening
it on a removeable USB drive (formatted as FAT32) with the same results.
I am suspicious about 'streams' being involved in this.

I found this on another XP group from Torgeir Bakken (MVP) :

"...
If you must/want to use IE to download the files, use the command line
tool Streams.exe to purge any streams from the files after they are
downloaded.

You can download Streams from here:
http://www.sysinternals.com/Utilities/Streams.html

I suggest you put Streams.exe in the C:\Windows\System32\ folder to
have it in the path
...."

Upon running 'streams' on the zip file, it indicates there is no stream found.
Could the security be messed up because it's expecting there to be a stream?
Since the zip file was created with a zip library in our application, my
guess is there may be some issues with the specfics of the zip file that
windows flags as 'dangerous'. SInce WinZip opens the file correctly, that
file itself is fine, there is just something about it that windows flags -
I;d like a was to turn off that check or bypass the blocking. Ideally if I
could get some idea of what had to change in the creation of the file itself,
that would be the best solution, but my guess is it may be beyond me.

We are using Symantec AV. But the 'blocked' popup is from windows, not AV,
I think.

-ed


"David H. Lipman" wrote:

> From: "photon209" <photon209@xxxxxxxxxxxxxxxxxxxxxxxxx>
>
> | I'm running XP/SP2 on a few machines here at the office, and they all exhibit
> | this behavior - attempting to open certain zip files generates the 'windows
> | is blocking files for your protection' popup, BUT when right-clicking on the
> | zip file to get the properties, there is NO unblock button!
> |
> | Can someone explain how windows determins what zip files it will let me open?
> | The files in question are not downloaded off the web or saved attachments
> | from Outllook. They are from a Win CE device. Of course the files open just
> | fine using WinZip or WinRar. My guess is there is something causing windows
> | to flag them as 'dangerous'.
> |
> | I have already tried using the policy manager to disable 'default risk level
> | for file attachments' and 'inclusion list for low file types'. Should I
> | disable everything in Attachment Manager'?? Before I changed anything there,
> | everything was set as 'Not Configured'. Will disabling everything risk much?
> |
> | I need this functionality as customers may not have WinZip on their machines
> | and may just want to use the built in compressed folders ability of XP. The
> | fact that I have seen this on 3 different XP machines with SP2 really makes
> | me curious as to the mechanism of the Block/No Unblock button issue.
> | Blocking is turned on but there is no way to turn it off???
>
> You need to define where the ZIP file is located. Network share, mapped drive, email, etc.
> Additionally what AV software is being used.
>
> --
> Dave
> http://www.claymania.com/removal-trojan-adware.html
> http://www.ik-cs.com/got-a-virus.htm
>
>
>
.