Duplicate:
Why does my .NET application crash when run from a network drive?
Can someone help me? For a school project, I wrote a C# windows application in Visual Studio 2005. It works just fine, no problems. I want to be able to share this program with others in my department at work. So, I copied the exe file to a network drive. When we attempt to run the exe from the network, it fails with "name of progrm...has encountered a problem and needs to close". If I have the co-worker copy the exe file to their c:\ drive then attempt to run, it works. Why won't my program run from the network drive?
Susan
.NET by default does not allow applications to be run off a network drive. Either copy it to a local drive or alter the security settings for .NET.
This discussion should give you what you need.
Microsoft has finally realised that the default behavior of preventing applications from running off a network drive is wrong. From The .NET 3.5 SP1 download page:
"Additionally, managed applications that are opened from network shares have the same behavior as native applications by running with full trust."
This change is long overdue: there is virtually no security benefit in preventing managed applications running from a network share, since a hacker could just as easily use an unmanaged application.
Related
When I run a console app in Visual Studio and open files on my workstation everything runs fine. When I run the same app in Visual Studio and open files on a network share I get an "Access to the path 'xxx' is denied".
I have access to the files in both locations. Does the console app not run as "me"?
As an admin you indeed have access to almost everything on the system. Applications and normal users do not however, especially over a network. This is a security feature of most modern operating systems.
For the sake of example, suppose you wanted to access a file in C:/Users/Vance/ (on the target machine). You can't access that or anything else remotely except C:/Users/Public/, until the necessary permissions are set.
See this to learn how to share folders over your local network.
Im not running the exe directly.
The networked machine still needs permission to execute programs remotely on the target machine.
If it's still not working after setting the correct permissions, your firewall is probably blocking the network traffic. In this case you'll need to add a rule to allow it through.
I've written a c# application which is intended to be ran on multiple computers within a network. The problem im trying to figure out is how I can share some common files between all the computers within the network.
I was handling this before by installing the software on one computer, storing a path string as an application scope setting during install, and then creating exe shortcuts on all other computers in the network which point back to the original installs exe.
Application deployment to network drive
I read this link and they talked about how it would be better to use clickonce rather than using a network share. The network share was the only way I could think of to have a common files directory. Are there any other ways to accomplish this?
Part of the installation process should ask the user for the path where the shared files will go. As long as each user enters the same path your good. That's the trick...
One way to solve that is to provide a silent installer mode that can be run with a preset of values the installer will need. You can then push the installer via group policy to all of the machines in your network.
I'm not sure what installer tech you are using, but WIX will create MSI's that support silent installation.
I have a program designed to work in XP, but with Windows dropping support for the OS, it's time to upgrade.
The location is in Program Files(x86), so when I run it without Admin privileges, it can't read/write library/assembly files within its folder.
What are my options?
Found this link helpful:
Allow access permission to write in Program Files of Windows 7
Since Vista was released in 2007, UAC has meant that users do not have rights to write to the program files directory, unless the program is run elevated. You need to locate the files that need to be modified somewhere else.
Exactly where those files should be located, I cannot say. Perhaps under the user profile, perhaps somewhere else. It would require some detailed knowledge of how your application operates to give more specific advise. And quite possible your application will need some re-design in order to work well with UAC.
On the other hand, you say that your application can't access library files within its folder. If all you are trying to do is read these library files, there will be no problem, even in modern versions of Windows. It seems plausible that you have not yet fully diagnosed the problem. It seems likely that your application is trying to write to a restricted location. But reading library or assembly files should be fine, even with restricted access under UAC.
So perhaps the problem is not the reading of these library files. Perhaps the problem is that your application is writing to the program files directory, or some other restricted location. You'll need to do a little debugging to diagnose exactly which parts of your application are failing.
I have a program that needs to create a text log. In XP, everything worked just fine, but when I tested it on Windows 7 - and was later Upgraded to Windows 7 for my Dev Computer - I get an error that "Access to the path 'C:\Program Files (x86)\Ludlum Measurements, Inc\LMI Universal Software\UniversalLog\' is denied". I get the a similar error if I have the installer create the folder and then try to create a text file in the folder.
I know this has something to do with permissions, but what should I give permission and how?
The programs that use the logging function?
The folder that the logs go into?
The folder the programs are in?
And how would this fix work under XP, Vista, Server 2005, and Server 2008 and as service (Part of the program runs as a Windows form, and part as a service)?
-Edit-
Emphasis added.
To reiterate: How will this work when installed and ran on an XP? A Server 2003? A Server 2008? Will this cause any problems for them?
And a new question: Can my program access files from the ApplicationData file? I just remembered the entire problem stemmed from me trying to create a config file that holds connection information for to an SQL database. Hitting your head against a brick wall for a day tends to make you forget why you started doing it in the first place. And again, this originally worked in XP, Server 2005, and Server 2008.
You should use Environment.GetFolderPath and pick a Environment.SpecialFolder folder that has write permissions when the UAC is on and write your log files there.
By default under UAC you donot have permissions to write to C:\Program Files or its subfolders.
Environment.ApplicationData is usually a good choice, it will be writable by default on XP , Vista , Server 2005 and Server 2008 unless the admin has locked stuff down too much
Teach Your Apps To Play Nicely With Windows Vista User Account Control is a good resource on how to write an application that behaves nicely under UAC
You shouldn't write anything to the Program Files directory after installation unless you are actually patching your application. Day-to-day usage of files should go into the application data folder (LocalApplicationData for non-roaming data and ApplicationData for roaming data).
string path = Environment.GetFolderPath(
EnvironmentFolders.SpecialFolders.LocalApplicationData)
http://msdn.microsoft.com/en-us/library/system.environment.specialfolder.aspx
I'm trying to debug a native application that uses some C# components but I'm getting a "Required permissions cannot be acquired" error when trying to start the application.
Now I did search StackOverflow and the net in general but all answers that I could find were related to ASP Web applications but the one I'm trying to debug is a standalone one.
Additional background: I'm using WinDbg to debug code that runs in a remote machine via remote terminal (in fact by using TWO remote connections since the machine in question is not reachable from my machine directly thanks to some stupid router configuration). The binaries are located on my computer and I access them via the auto drive mapping that RT does for me.
Now I did have similar issues in the past and I'm pretty sure that the code would run if I copy all the binaries to the target machine and start them from a local drive but this is something that I want to avoid.
NOTE: The code is targeting version 2.0 of the .Net Framework. The target machine does not have the configuration tool for .Net 2 installed and I gave up trying to install and make it run by hand to try to see if there is some "trust" setting that I can set to mke the code run..
Problem turned out to be a firewall issue and related to the fact that I could not reach the target machine (where the program was running) directly from my PC (where the executable files where located). I was connecting indirectly through another PC to the target machine and this was causing problems with the .Net security checks, after changing the switch/firewall so that I could connect directly I had no more problems.