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Windows 7: Copying exe files from server to pc

18 Dec 2010   #1
RAG

Windows 7 Home Premium 64bit
 
 
Copying exe files from server to pc

We update our client's software *.exe programs by storing the update code in a blob record in a server based MySQL database.

When the user logs on to the main program on his PC, if there are updates, a dialog message displays and the updates are written from the server to the local directory -- the same directory as the main program resides.

This has worked very well on XP (where we used *program files\* as the directory).
It has also worked fine in vista and 32bit windows 7 (where we use the user's app data\roaming directory.

On Windows 7 64-bit however, the update fails. It opens the file name of the updated program with zero bytes and then displays the message:

"Could not write to... c:\Users\[user]\AppData\Roaming\.. etc."

I've tried running the main program as administrator.
I've turned off UAC.
I suspect this is a security issue, but is there any workaround?

Help!

R Greene


My System SpecsSystem Spec
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18 Dec 2010   #2
Johnathan Lyman

Windows 7 Ultimate 64-bit
 
 

That app has to have permission to write to that user's folder. If it's running under their user name it shouldn't be a problem. If it runs under a different username or group (like Network Service, etc etc) make sure that group can write to said destination.
My System SpecsSystem Spec
18 Dec 2010   #3
RAG

Windows 7 Home Premium 64bit
 
 

The main program is run by the user (via shortcut on desktop) and the program is located in the user's appData\roaming folder.

How do I track down what is blocking the write?
My System SpecsSystem Spec
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18 Dec 2010   #4
Johnathan Lyman

Windows 7 Ultimate 64-bit
 
 

Quote   Quote: Originally Posted by RAG View Post
The main program is run by the user (via shortcut on desktop) and the program is located in the user's appData\roaming folder.

How do I track down what is blocking the write?
I'm not an expert on Active Directory or anything like that BUT if you are using that, make sure the user has permission to write to the drive:\Users\USERNAME\AppData\Roaming folder. System processes usually do, as with network services, but if the user doesn't, any program they run won't either. Sometimes even if UAC is ignored when it's run as an admin.

In regards to your second question, I'm really not sure.
My System SpecsSystem Spec
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 Copying exe files from server to pc




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