The Web Application Project is configured to use IIS The Web server could not be found

Question

I have a web project in my solution file that is  unavailable  when I open the solution  When I right-click on the web project and reload the project  I get the following error    The Web Application Project mycompany myapp mywebproject is configured to use IIS  The Web Server  http   localhost MyWebApp could not be found    I have not manually set up virtual directories for this web application    Per colleagues  Visual Studio should prompt me to create virtual directories but I am not getting prompted    I installed VS2010 before installing IIS on my dev machine    Here is my development machine setup    Windows 7 Enterprise Service Pack 1 64 bit OS Visual Studio 2010 Enterprise Service pack 1 IIS version 7 5

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In my case I was able to open the solution in offline mode just running the command   iisreset

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In my case I wanted to switch from http to https  so I had deleted http from IIS  In my  csproj user file found that I still had    lt IISUrl gt http   localhost  lt  IISUrl gt    So I changed it to    lt IISUrl gt https   localhost  lt  IISUrl gt

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This worked for me - Make all your IIS websites point to localhost All Unassigned  only

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Check if IIS Express is installed  If IIS Express is missing  Visual Studio might discard the setting  lt UseIISExpress gt false lt  UseIISExpress gt  and still look for the express

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Since the accepted answer requires IIS Manager  and IIS Express doesn t have IIS Manager or any UI  here s the solution for you IIS Express users  and should work for everyone else too    When you open Visual Studio and get the error message  right-click the project Solution Explorer and choose  Edit  ProjectName  csproj   In the project file  change the following line   lt UseIIS gt True lt  UseIIS gt  to  lt UseIIS gt False lt  UseIIS gt  Save the file   Now reload your project  Done   You ll then be able to open your project  If at this point  you want to use IIS  simply go to your project properties  click the  Web  tab  and select the option to use IIS  There s the button there to  Create Virtual Directory   It may tell you that you need to run Visual Studio as an administrator to create that directory  so do that if needed

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For you Win8 users out there  if you follow the steps in the accepted answer  console spits out a message at you saying  thou shalt not use the command-line to execute this command   paraphrasing   Instead  access the Programs  amp  Features via Control Panel  or Windows   R   appwiz cpl   click  Turn Windows features on or off   and make sure you have the following installed    Internet Information Services    gt  World Wide Web Services      gt  Application Development Features        gt  ASP NET 4 5   This will check a bunch of other options as well  As soon as I installed these features  and ran VS2012 with elevated permissions  I was able to launch my app successfully

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I ran into this issue when the  lt ProjectTypeGuids gt  element in the  csproj file contained the unit test project GUID   3AC096D0-A1C2-E12C-1390-A8335801FDAB    Removing it made the project load without problems

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You will not believe that   start visual studio as Administrator   as obvious from the message      The Web Server  http   localhost MyWebApp  could not be found    could not be found because may it has no privileges to see it   so Just restart visual studio as Administrator

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This may help some people in 2020  The main issue is that the IIS settings in the CSPROJ file don t match with the configuration for the machine  For example  if you had the Web Application Project pointing to localhost 12345  and a virtual directory isn t set up on the machine on that port  you ll get this error  Using VS2019  I had this same issue  and the IIS settings in the CSProj file were being ignored  The reason for this is a new property in the CSProj file called  quot SaveServerSettingsInUserFile quot    lt ProjectExtensions gt       lt VisualStudio gt         lt FlavorProperties GUID  quot  349c5851-65df-11da-9384-00065b846f21  quot  gt           lt WebProjectProperties gt             lt SaveServerSettingsInUserFile gt True lt  SaveServerSettingsInUserFile gt           lt  WebProjectProperties gt         lt  FlavorProperties gt         lt UserProperties UseAjaxifiedTemplates  quot True quot  UseJQuerySupport  quot True quot    gt       lt  VisualStudio gt     lt  ProjectExtensions gt   When this is set to TRUE  the IIS Web server properties are in the  CSPROJ User file of the same project name  This allows individual users of a project to have their own IIS settings  provided this file is not checked into source control  You can control where the settings are stored using Visual Studio GUI in the properties for the project under  quot Web quot    quot Apply server settings to all users quot   When this is on  the IIS settings are stored in CSPROJ  when off  they are stored in CSPROJ User

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I fixed this simply by reinstalling IIS Express after downloading from below link    https   www microsoft com en-us download confirmation aspx id 48264

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This solution worked for me  Right click the Project and select edit and find the following code as shown below in the picture      change the  lt UseIIS gt True lt  UseIIS gt  to  lt UseIIS gt False lt  UseIIS gt    OR     change the  lt IISUrl gt http   example com  lt  IISUrl gt  to  lt IISUrl gt http   localhost  lt  IISUrl gt

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You can load the project without setting the value of attribute UseIIS to true   Simply follow the below steps   In the mywebproject csproj file--  Delete the tag  lt  IISUrl http   localhost MyWebApp  lt   IISUrl  and save the file   The application will automatically assign the default port to it

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In my case  the  Default Web Site  in IIS didn t have a binding for localhost on port 80  You should have a binding for whatever your  value in the  csproj file is

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When this happens the easiest solution is to make the virtual directory manually   First of all  you need to make sure you have the right version of ASP Net installed and that you have installed the IIS extensions   To do this  go to the relevant  net version s folder in C   Windows  Microsoft NET Framework  dotnetver     substituting the bracketed folders for the right folders on your PC  and run this command  aspnet regiis exe -i   Next once that s run and finished  sometimes running  iisreset   from the command line helps  sometimes you don t need to   Next  go to your IIS Manager and find you localhost website and choose add a folder  Browse to the folder in your project that contains the actual ASP Net project and add that   Finally  right click on the folder you added and you should have an option that says  convert to application  or  create virtual directory  or something similar     Make sure the Virtual directory has the name  MyWebApp     Reload your solution and it should work   Please be wary  this isn t a programming question  and shouldn t really be posted here  but I ve posted this guidance as it s a common problem  but the advice I ve posted is generic  the commands I ve listed are correct but the steps you need to do in IIS may vary  it depends on your version and your account privileges   Good luck

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Cause  The IISURL inside project csproj is not correctly reflected in the project setting  and the virtual directory was not created  Solution  Change the Project URL to correct PORT and create the Virtual Directory to make the missing PORT available   Follow Below Steps  Step 1  Right click on the project file to Edit the project csproj file   Step 2  Search IIS and modify from  lt UseIIS gt True lt  UseIIS gt  to  lt UseIIS gt False lt  UseIIS gt   Step 3  Right Click Project to Reload the Project  After Reload successfully  right click Project and select Properties   Step 4  Locate Project URL option under Properties   gt  Web  Step 5  Change the Project URL to IIS URL indicated both on the Error Message and on the  lt IISURL gt http   localhost 8086  lt  IISURL gt  from project csproj file  Then Click Create Virtual Directory  Save All   Step 6  Redo Step 2 so it doesn t impact the remote codebase and the server deployment settings

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Open the project folder and delete  Project  csproj user  then reload the project on Visual Studio

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In my case  this problem was caused by broken IIS bindings  Specifically  my  http  binding had been deleted  Recreating it fixed the problem

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Follow this completed solution step by step  it s works for me in VS 2017   Open Command prompt in administrator mode  Open File explorer and got to  NET Framework folder   Eg C  Windows Microsoft NET Framework v4 0 30319  v4 0 30319 this is my  NET folder  you want to select your relevant folder   in CMD - Go to  NET folder path cd C  Windows Microsoft NET Framework v4 0 30319   Execute below command in CMD aspnet regiis exe -i  You can see this message finally - Finished installing ASP NET  4 0 30319 0  iisreset  You can see this message finally - Internet services successfully restarted  Open IIS in your computer  if not config Follow this   Go to Site and right click  Add WebSite  Fill - Site name and select physical path  Then type port number  you can find port number in  csproj file and port number must equal with  IISUrl    EG    lt IISUrl gt http   localhost 15724  lt  IISUrl gt  my port is 15724  Note   you cannot create port 80 number  because it used default IIS page  Click Ok   Open visual studio with administrator permission  Then right click and reload your project   Your Problem may be solved

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Try opening Visual Studio with Administrator privileges  In my case  it gave access to the IIS site and made this error go away  I was then able to switch the project to use IIS Express which doesn t seem to need administrator privileges

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Edit the  csproj or vbproj file  Find and replace these entries    lt UseIIS gt true lt  UseIIS gt  by  lt UseIIS gt false lt  UseIIS gt   lt UseIISExpress gt true lt  UseIISExpress gt  by  lt UseIISExpress gt false lt  UseIISExpress gt

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For DNN users my issue was I needed a binding for dnndev me at port 80  I have multiple installs that run on different ports and VS requires that that particular Url to exist on port 80  not 86 like mine was

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I had this error  too  I thought everything was setup correctly  but I found out that one thing was missing  The host name I used for my project was not  yet  resolvable   Since my app determines the current client s name from the host name I used a host name like clientname mysuperapp local for development  When I added the development host name to my hosts file  the project was loadable again  Obviously  I had to this anyway  but I haven t thought that VS checks the host name before loading the project

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This happens with me when I tried to open a project from the  csproj file  but I get over it by opening the project from VS    File  Open  Web Site  and select the directory which include my project

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In my case  the url referenced in the csproj file was incorrect    It needed to be prefixed with www   I made the changes  saved the file and the project loaded fine

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in my case  make sure you have a  Default  website

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For my project  I had to delete these two lines from  csproj file  lt ProjectGuid gt  3AA499DF-4A65-43B7-8965-D08A4C811834  lt  ProjectGuid gt   lt ProjectTypeGuids gt  349c5851-65df-11da-9384-00065b846f21   fae04ec0-301f-11d3-bf4b-00c04f79efbc  lt  ProjectTypeGuids gt   I tried deleting only the first one  but it wasn t enough  EDIT  As many users have pointed out  this can change your project type or mess with your source control program  I can t investigate these issues as it was a school project I do not have anymore  Please be careful when trying this  At least make a copy of what you delete

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If you are connected via TFS  open your project csproj user file and check for   lt UseIISExpress gt false lt  UseIISExpress gt    and change it to true    lt UseIISExpress gt true lt  UseIISExpress gt

[c#] The Web Application Project [...] is configured to use IIS. The Web server [...] could not be found.

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