error CS2012: Cannot open <executable path> access to <executable path denied> - c#

I was working on a WPF application in Visual Studio 2015 and all went well until unexpectedly the build dropped me the CS2012 error inform me that it cannot access/update the executable in the /Debug directory.
I tried the following and it didn't work:
Restart
Close VS and open the application again
Build->Clean
I couldn't find any solution in the web so I tried:
1. to move the whole project directory to another location.
2. creating a new WPF project and assembling it file by file with copy/pastes.
The weird thing was that in both cases the application worked in the new location. I continued the experimentation (in the original directory) and i tried to build a "Hello World" Console application in the same directory. The result was that the trivial console application didn't work and produced the same problem as the WPF application (CS2012 error).
Since I haven't noticed any activity of another program (i.e., antivirus) trying to quarantine (or changing the file/folder permissions of) this folder, I assume that this has been done by VS somehow but I don't know why. Perhaps it is a bug.
Is anyone has a logical explanation about this problem? And a way to fix it?

I found that my other running solution was referencing the same < executable path>.
Just make sure that no other process is using the referenced folder/file/dll

Try to close all processes, move the project to a different folder (on a different disk) b restart the computer and everything will work as it should. It worked for me without any problems. Hope this helps someone

I wanted to quickly test something in a .NET Core Console Application Solution and ran into this issue due to BitDefender blocking the resulting binaries.
I've named the app client which actually was the culprit. Renaming my solution fixed this.

Sometimes antivirus softwares can block copying an exe file from a folder to any path. You can manage by settings or the easiest way is to shut down live protection while you are coding and debugging.
:)

Deactivate your anti-virus for a while and try again.
This works for me.

Related

App.Config on Winforms is getting reinstalled

I have a windows application installed and working perfectly fine.
Something weird came up, the test scenario is if I rename the config file from the original name which is:
Model Label PC Client.exe.config
...to:
xxxModel Label PC Client.exe.config
...and click the .EXE file on the application folder / path where i installed it, it works as expected.
But when I clicked the shortcut icon of this application on the desktop, it shows a pop up that installs a new copy of the correct config file name.
please refer to the screenshot , any idea how to prevent this from happening? or is this really the behavior?
OP:
"any idea how to prevent this from happening?"
For installed apps, it is by design. Essentially you have removed an installed file and so the installer tech will kick in to recover it as if nothing happened.
Now technically you could get around that auto-recovery by not using MSI tech to install your app trusting instead on good-ol' XCOPY but then again, renaming/moving/deleting the file may break the app because this time there is no auto-recovery!
Additionally .NET apps expect to find a .config file matching the same name as the executable so you shouldn't go renaming/deleting/moving it in most scenarios.

c# threading weird ThreadAbortException

I am running into a very strange issue. I am sure its something small but I am pulling my hair out on this one...
I am working on integrating a third party lib into my application. I downloaded the lib and it came with sample code. I was able to build and run the sample code with no problem. I copy the lib + the sample code into my own solution folder without changing anything in both projects, added them into my own solution, built and run. I get ThreadAbortException at the end of my sample app. This used to work in separate folder?!!?!
The code opens a socket connection within a listening thread. The thread monitors and consumes the socket information. Then before the program exits, it does a runner.Abort() where runner is the thread. What I can't figure out, is why is it not throwing ThreadAbortException in its original unzipped folder. But when I copied exactly into my own solution it will throw?
I did not see any use of Thread.ResetAbort().
Need some help on this one. Thanks in advance.
What I have tried:
Changing .net framework version(no matter how I change, original directory will run fine but my own solution will choke on ThreadAbortException)
This is on Visual Studio 2013 community edition.
Thank you for reading.
edited below***
Config files are identical. The bin directory shows the generated pdb files have size differences but other files seem to be identical in size. The code that did not work have smaller pdb files.
I deleted the original directory's bin for both the lib project and the sample project, removed the reference from the sample project and re-add it from the solution. built, and it builds the same size(bigger than other solution). Ran it and it exited fine without ThreadAbortException. Then I did the same thing under my own solution and it builts with smaller size pdb and the ThreadAbortException showed up
I also verified that both instances of Visual studio are 2013 community.
I ended up creating a brand new solution, put the third party projects in there. Then add my old projects in the new solution one by one. It is still unclear to me why it happened. But I am going to move on for now.

Why does Rebuild ALL Fail after moving solution folder to a different location?

I have a C# web application that I've been working on which has built properly since I began working with it. I moved the entire solution into a different folder, and now, when I try to build it says "Rebuild All failed" with no other errors. I have reviewed the verbose output from build; but, I don't see anything that jumps out at me as causing the problem. If I move the solution back to the original location, it will build again. Anyone know why the new location breaks the build?
Thanks.
The most likely cause of this error is that the location you are moving the solution to is not trusted.
For example, if you move the solution to a protected folder like C:\Program Files or C:\Windows or a network location.
If this is not the case, please advise where you are moving the file too and perhaps share any errors from your build log.
I believe I found it- turns out, moving it several directories deeper may have blown the maximum path size for NTFS (see this question: VS2010 - same soltuion (IE SVN checkout), different locations, one builds, one fails any ideas?). I moved my project to a root directory in c: and now it's compiling normally in VS2010.
A friendlier error would have been nice; but, hey, what can you do?

vs2003 : c# can not build visual studio solution

I get latest from source control and can not build my visual studio solution. I get the following error:
Cannot copy assembly 'XYZ' to file 'C:\myfolder\bin\Debug\XYZ.dll'. The process cannot access the file because it is being used by another process.
I have rebooted the machine but nothing seems to work. please help.
Use ProcessExplorer to determine what other process is holding the DLL open - my bet is that it is Visual Studio itself. Try closing down any open form Design windows (or all code/design windows in VS.Net for that matter) and see if you still get the same problem.
You can use the handle tool to determine what process is using that file:
handle XYZ.dll
From there, you can figure out what started the process and why it's using the file.
Whenever i've seen that error, it was because the program i was trying to compile was still running. You may want to check and make sure any debug sessions are stopped (not just paused, but stopped completely), and that your program doesn't appear in the Task manager under the "Processes" tab.
Try changing the build configuration from Debug to Release and try compiling again.
let's try a simple solution. The DLL in your bin directory is likely marked as Read-Only. Visual studio doesn't check out the DLLs from the BIN directory when you check out source files. So if you keep the binaries in source safe then you need to manually check them out or manually take off the read-only flag in the directory.

Unable to copy a file from obj\Debug to bin\Debug

I have a project in C# and I get this error every time I try to compile the project:
(Unable to copy file "obj\Debug\Project1.exe" to "bin\Debug\Project1.exe". The process cannot access the file 'bin\Debug\Project1.exe' because it is being used by another process.)
So I have to close the process from the task manager. My project is only one form and there is no multi-threading.
What is the solution (without restarting VS or killing the process)?
This should work.
Go to your project properties.
Inside Build Events, under Pre-build event command line, add these two lines of code:
if exist "$(TargetPath).locked" del "$(TargetPath).locked"
if exist "$(TargetPath)" if not exist "$(TargetPath).locked" move "$(TargetPath)" "$(TargetPath).locked"
#Udpate: Since the time I was first posting this 'answer', I tend to another explanation to the problem. The issue since than happened more and more often outside of Visual Studio also - while trying to copy an .exe file from one folder to another. While in the first place Windows did not allow to copy(!) an .exe file (it was first asking me for administrative rights but refused to copy it afterwards anyway) it still showed up in the explorer. But after a while - without any further action taken, it disappeared magically. Just like the problem in the question always seems to solve itself after a while. So i assume, the problem is more related to a delayed deletion of the project output file and less a buggy VS. I apologize for any unjustified suspicion. :|
This gives the search for a solution a complete different direction, I guess. Did find that link and will update on any progress:
https://superuser.com/questions/234569/windows-7-delayed-file-delete
========================================================================
This is a known bug in VS. I discovered it very often - mostly in VS2010 (with/without SP1). Several "solutions" are recommended. Some of them, which kind of helped for me:
Delete the .suo file in your project dir. Eventually need to create your whole solution from scratch.
Close any Windows Form Designers may remain open.
Use a prebuild script, which deletes the target from the output dir.
Disable the VS hosting process.
None of these really fixes the bug. But it may brings the VS back to a usable state - until a true solution is provided by MS (if ever will).
http://social.msdn.microsoft.com/Forums/en/vsdebug/thread/cea5e4b2-5b33-453c-bffb-8da9f1a1fa4a
http://social.msdn.microsoft.com/Forums/en/vbide/thread/cd12f3c7-de96-4353-adce-23975e30933f
I can confirm this bug exists in VS 2012 Update 2 also.
My work-around is to:
Clean Solution (and do nothing else)
Close all open documents/files in the solution
Exit VS 2012
Run VS 2012
Build Solution
I don't know if this is relevant or not, but my project uses "Linked" in class files from other projects - it's a Silverlight 5 project and the only way to share a class that is .NET and SL compatible is to link the files.
Something to consider ... look for linked files across projects in a single solution.
This is happening because [yourProjectName].exe process is not closing after finishing debugging.
There are two solutions to this problem.
Every time you make change to application, Go to Task Manager -> Processes -> [yourProjectName].exe, end this process. You have to end this process every time you make changes to system.
Add a exit button in your application to exit window and add these line to click event
System.Diagnostics.Process.GetCurrentProcess().Kill();
Application.Exit();
If you look in the obj directory, and you don't see your .exe, it's possible that Avast! or other antivirus is deleting it. I would actually see the .exe show up and then disappear. As soon as I turned off Avast!, problem solved.
VS2010 throwing "Could not copy the file "obj\x86\Debug\[file].exe" because it was not found."
The real problem isn't the error you're getting; it's that the application isn't cleaning up after itself.
It's either holding on to references, not freeing resources, or something else that's causing the process to not end when it's being told to close. Fix up that issue and this problem will resolve itself. We can't really help you with that unless you post your code (and at this point, if you need help with that, you should start a new question).
I had to go into windows explorer and delete the bin/debug folder as well as the obj/debug folders. Then I cleaned & rebuilt the project.
Close your project
Delete bin folder
i find it work, :)
Rename the assembly to a different name to solve this issue.
After seeing a similar error in visual studios 2012 out of no where. I have found that that going to the root folder of the project and right clicking on it I unchecked read only and this error went away. Apparently TFS sometimes will made a folder read only. Hopefully this will help anyone with a similar issue. Thanks
This happened to me at VS 2010 and Win 7..
Case :
I can not Rebuild with Debug Configuration manager, but I can rebuild with Release Configuration manager
What I have tried:
Check my account type at control panel - user account --> My Account is Administrator
Set the bin folder not read only
Add security at bin folder to Everyone
stop the iis server
Stop antivirus, check ridiculous running program using task manager and ProcessExplorer
run VS as administrator
If All that way is still not working.
Then, the last way to try:
close solution
close visual studio
start - shutdown
press power button to turn on the computer
login to your account which has administrator previlege at user type
reopen solution
rebuild
that way working. All people call this way as Reset Computer
Mine got solved by:
Clean solution
Close all processes depending on VS (Current instances).
Rebuild
I had same problem, after read your answers , went to Task Manager and searched for app.exe because i believe maybe it doesn't close .
And found it , select it and do END TASK .my problem solved.
Before rebuild the solution, clear the project, stop the IIS and open the "bin" folder property. Uncheck the Read-only Attribute in general tab then rebuild.
I found that ending all msbuild.exe tasks (in Task Manager) fixed the issue with VS2012.
I struggeled with this since years.
I finally downloaded LockHunter to find out who locked the file.
In my case it was MBAM.
Once I added my project's directory to MBAMs exclusion list, I didn't have this problem anymore.
I too had the same issue. I resolved it
Closed my VS, then in Task Manager, End tasks like Microsoft VisualStudio WCF Tools, MSBuild.exe
Then open VS and clean and rebuild.
No matter what the cause of this problem is, the only working solution for me is the following:
Go to Your-Project-Properties -> Application tab(first tab) -> Change the Assembly name.
This way your app creates a new assembly file each time you change the assembly name.
Finally, after you finish to develop, you can delete all those extra assembly files and just keep the last one (main one). Non of the other solutions worked for me, except this one.
Run Visual Studio as Administrator
We recently experienced this on a WinPhone 8 project, in VS 2012 Update 2.
Inexplicably, the cause was using the Tuple type. Removing the code that used a Tuple the problem went away. Add the code back the problem returned.
This will Sound crazy, when ever i build the project the error will be displayed and the avast antivirus will show it as malicious attempt and the project does not run.i just simply disable my antivirus and build my solution again the missing .EXE file has been Created and the project has been successfully executed.
Or you can try this
Visual Studio build fails: unable to copy exe-file from obj\debug to bin\debug
I solved this by killing XDesProc which had a handle on the DLL it couldn't delete.
Well i have the same problem, my way to fix it was to stop and disable the "application experience" service in Windows.
Not a direct answer to your question..
One scenario when this can come is listed below -
If your application is under Debugging process - say by "Attach to Process" debugging, this error may come
If this error was encountered, you can proceed as the following
End the msbuild.exe task
End the explorer.exe task
Run the explorer.exe task again
for me it was the antivirus. Just add visual studio project or entire parent folder to Antivirus exclusion list or you can also add file extension as exclusion and this method worked for me in visual studio 2010/2012
Solution1:
Close the project.
Delete the bin folder.
Open the project.
Build the project.
Solution2:
Add the following code in pre-build event:
attrib -r $(OutDir)*..\* /s
This command line code will remove the ready-only attribute of "bin" folder. Now visual studio can easily delete and copy new dlls.
A very simple solution is to open the Task Manager (CTRL + ALT + DELETE), go to Processes tab and search by name the processes with your project name that are still running. Kill all the processes and go on ! :)
after day with search and build and rebuild i found that you just need to turn off turn on the visual studio its look like it catch the service in different thread
My Visual studio 2019 suddenly stops and restarts and then when i run project this error comes.
I resolve this issue by going into my project folder and delete bin and obj folder
Then clean and rebuild my project. This resolve my issue.

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