Access to the path c inetpub wwwroot myapp App Data is denied

Question

I just installed IIS on Windows XP   When I try to execute an app  I get an error      Access to the path  c  inetpub wwwroot myapp App Data  is denied    Description  An unhandled exception occurred during the execution of   the current web request  Please review the stack trace for more   information about the error and where it originated in the code       Exception Details  System UnauthorizedAccessException  Access to the   path  c  inetpub wwwroot myapp App Data  is denied       ASP NET is not authorized to access the requested resource  Consider   granting access rights to the resource to the ASP NET request   identity  ASP NET has a base process identity  typically    MACHINE  ASPNET on IIS 5 or Network Service on IIS 6  that is used if   the application is not impersonating  If the application is   impersonating via   the identity will be   the anonymous user  typically IUSR MACHINENAME  or the authenticated   request user       To grant ASP NET access to a file  right-click the file in Explorer    choose  Properties  and select the Security tab  Click  Add  to add   the appropriate user or group  Highlight the ASP NET account  and   check the boxes for the desired access       Source Error       Line 70      Protected Sub cmbSettingFiles SelectedIndexChanged ByVal   sender As Object  ByVal e As System EventArgs  Handles   cmbSettingFiles SelectedIndexChanged   Line 71   Dim doc As XmlDocument   New XmlDocument     Line 72  doc Load Path Combine basePath  cmbSettingFiles SelectedValue      Line 74  Dim settingsNode As XmlNode   doc SelectSingleNode   settings        Source File  C  myapp install install aspx vb    Line  72    I have tried grating permission by doing this      To grant ASP NET access to a file  right-click the file in Explorer    choose  Properties  and select the Security tab  Click  Add  to add   the appropriate user or group  Highlight the ASP NET account  and   check the boxes for the desired access    But the error persists   Does this have anything to do with my code   How can I resolve this   EDIT  I have solved the problem on my dev machine  but I am still getting the error on my web server   Thanks

User · Answer

Are you sure you are adding the correct user? Have you checked to see which user is set for your applications app pool?

This error will also happen if it cannot read the file for some reason; such as the file is locked or used by another application. Since this is an ASP.NET web application you will want to make sure you are not performing any actions that would require the file to be locked; unless you can guarantee you will only have one user on your page at a time.

Can you post an example of how you access the file? What type of file is it? Code snippets will help you get a more exact answer.

User · Answer

Try to go to App Data folder property and add ASPNET user with read   and write privileges   Ref  How to assign correct permissions to App Data folder of WebMail Pro ASP NET Permissions on APP DATA Folder ASP ASP NET Best way to handle write permissions   If it does not solve your problem then check whether your XML files are not open by another thread using these configuration files   and provide some more details if still persists

User · Answer

I finally found the answer for 2019   You need to add  IIS APPPOOL DefaultAppPool  to the list of users that have security rights to the directory that is to be modified   Make sure they have full rights

User · Answer

Consider if your file is read only  then the extra parameters may help with FileStream  using  var fs   new FileStream path  FileMode Open  FileAccess Read

User · Answer

For me i had already created a folder with name excel in wwroot D  working directory OnlineExam wwwroot excel And i was trying to copy a file with name excel which was already existing as a folder name  the path which was required was D  working directory OnlineExam wwwroot excel finance csv so according i changed the code as below  string copyPath   Path Combine  webHostEnvironment WebRootPath   excel  finance                        questionExcelUpload Upload CopyTo new FileStream copyPath  FileMode Create      Basically check if a folder or a file with same name as your path exist already

User · Answer

Another reason could be because the filepath is empty where you are trying to write which is why it can t find it  just another reason why this error occurs

User · Answer

If you re getting this error  you re probably trying to write to wwwroot  By default this is not allowed  for good reason  Instead  consider storing your files somewhere besides wwwroot  If you just need to serve the files  store them in a folder outside of inetpub and use a virtual directory to make them visible to IIS  Original answer   For those running IIS on Windows Server  By default  the IIS user does not have write permissions for the wwwroot folder  This can be solved by granting full permissions to the IIS IUSRS user for wwwroot   Open File Explorer and go to C  inetpub  Right click on wwwroot and click on  quot Properties quot  Go to the Security tab and click  quot Edit    quot  to edit permissions Find and select the IIS user  In my case  it was called IIS IUSRS   server name  IIS IUSRS   Select the  quot Allow quot  checkbox for all permissions

User · Answer

I had a similar situation   I am using TFS for source code control   What I found is that when it was checked in  it made the files readonly   This caused the above error in my service where it was opening them read write   Once I checked them out for edit   Everything worked great   I am considering trying opening them readonly in the service   I think that once they get published to the production server  this is not an issue   Only in the development environment   I have seen similar issues with Services that use Entity Framework   If the  svc file is checked in  you can t do updates to the database through EF

User · Answer

Please Run Visual Studio with Administrator privilege  This Issue is solved for me    Access to the path is denied C  inetpub wwwroot is denied indicates that the Self Service web site can   t access a specific folder on the server where it is installed   This could be either because the location doesn   t exist  or because the Authenticating User does not have any permissions applied to Write to this location

User · Answer

I tried to add ASP net v4 0 with all permission  add NETWORK SERVICE user but nothing help  At last  added the MODIFY right of DefaultAppPool user in App Data folder  problem solved

User · Answer

I created copy of my inet folder  to make a duplicate of the site  It showed  access denied     App Data viewstate 1 6 6 0        On checking it showed that app data folder is having IIS IUSER addes but does not have modify or write acess checked  Just check those boxes and the instance begin to run

User · Answer

Try granting permission to the NETWORK SERVICE user

[asp.net] Access to the path 'c:\inetpub\wwwroot\myapp\App_Data' is denied

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