System.UnauthorizedAccessException

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4.00/5 (1 vote)

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I know I have encountered and fixed this once before but I can't find the answer

I have a project working perfectly in design mode but after deploying I get an error
System.UnauthorizedAccessException: Access to the path 'C:\Program Files\...\Prison Alarm Manager\Errors\' is denied.

Iknow the error is coming from this code but cna't recall how to fix it.

Dim fs As FileStream = New FileStream(Application.StartupPath & "\Errors\errlog.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite)

Full procedure should it help

VB

Public Sub WriteToErrorLog(ByVal msg As String, ByVal stkTrace As String, ByVal title As String)

      'check and make the directory if necessary; this is set to look in the application
      'folder, you may wish to place the error log in another location depending upon the
      'the user's role and write access to different areas of the file system
      If Not System.IO.Directory.Exists(Application.StartupPath & "\Errors\") Then
          System.IO.Directory.CreateDirectory(Application.StartupPath & "\Errors\")
      End If


      'check the file
      Dim fs As FileStream = New FileStream(Application.StartupPath & "\Errors\errlog.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite)
      Dim s As StreamWriter = New StreamWriter(fs)
      s.Close()
      fs.Close()

      'log it
      Dim fs1 As FileStream = New FileStream(Application.StartupPath & "\Errors\errlog.txt", FileMode.Append, FileAccess.Write)
      Dim s1 As StreamWriter = New StreamWriter(fs1)
      s1.Write("Title: " & title & vbCrLf)
      s1.Write("Message: " & msg & vbCrLf)
      s1.Write("StackTrace: " & stkTrace & vbCrLf)
      s1.Write("Date/Time: " & DateTime.Now.ToString() & vbCrLf)
      s1.Write("===========================================================================================" & vbCrLf)
      s1.Close()
      fs1.Close()

  End Sub

Posted 11-Jul-10 4:56am

Tim Norton

Updated 11-May-20 8:49am

Sandeep Mewara

v2

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3 solutions

Solution 2

I fixed it by changing the path I save to from ProgramFiles to User/AppData

<pre lang="vb">Dim pAppPath As String
 pAppPath = Application.UserAppDataPath & "\Errors\errlog.txt"


 If Not System.IO.Directory.Exists(Application.UserAppDataPath & "\Errors\") Then
     System.IO.Directory.CreateDirectory(Application.UserAppDataPath & "\Errors\")
 End If

 'check the file
 Dim fs As FileStream = New FileStream(pAppPath, FileMode.Append, FileAccess.Write, FileShare.Write)
 Dim s As StreamWriter = New StreamWriter(fs)
 s.Close()
 fs.Close()

Posted 11-Jul-10 14:57pm

Tim Norton

Solution 4

In my case it was my AVG anti-virus that triggered the exception. I added my VS Projects directory to the "Allowed" list, then had to add the .exe to the exceptions list after I copied the executable to my App directory.

Posted 8-Feb-21 7:04am

AwileyDog

Updated 8-Feb-21 7:13am

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Sandeep Mewara · Accepted Answer · 2010-07-11T06:15:00

Solution 1

You need to give proper security permissions to the folder you are trying to access.

Currently, the file you are trying to write in must be readonly or the ASPNET user must not have the permission. If you are using impersonation then you need to give that user the write priviledge.
:thumbsup:

Posted 11-Jul-10 6:15am

Sandeep Mewara

Comments

Nish Nishant 11-Jul-10 14:15pm

Reason for my vote of 5
Worthy of a 5!

Member 14924685 27-Aug-20 16:29pm

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La aplicación también se debe compilar con la depuración
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