86

Using VS2012 I created a dynamic data project. It all worked and then I started configuring the web deployment settings. I am not sure what setting I changed exactly as there was no error. However when I try and load the solution I get the following error for the project and it will no longer load.

Specified condition "$(CleanWPPAllFilesInSingleFolder)" evaluates to "" instead of a boolean. C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v11.0\Web\Microsoft.Web.Publishing.targets

I cannot see CleanWPPAllFilesInSingleFolder in the csproj file. Any ideas on how to fix this so that I can load the project once more?

Aleksey L.
  • 35,047
  • 10
  • 74
  • 84
TheEdge
  • 9,291
  • 15
  • 67
  • 135

6 Answers6

209

I just had this issue as well. Try the following:

  1. Close Visual Studio
  2. Delete your .user and .suo files
  3. Re-open the solution.

This worked for me.

tom.dietrich
  • 8,219
  • 2
  • 39
  • 56
Brian Vallelunga
  • 9,869
  • 15
  • 60
  • 87
  • 13
    for the bleary eyed speed readers: that is close *Visual Studio* Not the solution! – fiat May 23 '13 at 13:02
  • 13
    I've just stumbled upon this issue in VS2012, and simply closing and reopening VS solved the problem for me, no deleting necessary. – Robson Rocha de Araujo Jun 06 '13 at 19:31
  • 10
    I find this issue is caused by using the `Preview` feature of the new Publish window. If I skip the preview, it seems to work. – gregpakes Jun 26 '13 at 09:40
  • Similar answer here: http://irisclasson.com/2013/10/02/visual-studio-error-cleanwppallfilesinsinglefolder-evaluates-to-instead-of-a-boolean/ – Glen Little Nov 14 '13 at 20:57
  • 1
    Also here. For me, I'd opened VS 2013, changed a config and immediately went to publish to Azure. When I did the preview, it failed with the error mentioned. Then, I couldn't build. The trick is to do a Rebuild BEFORE you publish, and it works. – Program.X Jul 08 '15 at 09:16
  • I'm still encountering this with VS 2015. I find that if I close the solution, delete the .user file, then reopen the solution, then the Preview button will work once. After that it will fail every time (irrespective of doing a Clean/Rebuild) until I close the solution and delete the .user file again. – Samuel Jack Oct 21 '15 at 11:25
  • IN addition to all this, I found that the value for one of these was False while everywhere else in the file it was false (lower case) AND it was not on a line by itself with leading blanks. Here is what one of these looks like in my csproj file for VS2013: false false Removed blanks, lowercase false, and put on one line, publish problem mitigated. – Allen Mar 07 '16 at 21:19
7

I've found a very very weird (and working) workaround for this type of deploy issues, if you have tried closing & opening VS with no luck, try to close all open document prior to the publish process. weird huh? :)

so the complete fix-it guide for this type of issues would be like the following:

  1. Try "Clean" then rebuild
  2. If it's still not publishing, try closing & reopening your project again
  3. Still no luck? try closing VS but this time delete all the *.user & *.suo files, then open up your solution again and give it a try.
  4. Finally, if all these steps are not working, try my newest trick, close all the opened document and give it a try
    5. 5.

let me know if this has helped you :)

Mohammed Swillam
  • 9,119
  • 4
  • 36
  • 47
4

I closed and re-opened my solution. I'm inclined to believe it's a defect in the Preview feature as that was the only thing I did differently before it started happening. I haven't been able to reproduce it since, however.

Michael D
  • 41
  • 1
3

All I did was close Visual Studio then Reopened it. Done

Dumisani
  • 2,988
  • 1
  • 29
  • 40
0

In my case, it turned out that IIS was not installed on the destination server! Installing it fixed the problem.

Sam
  • 40,644
  • 36
  • 176
  • 219
0

In my case after removing all *.user and *.suo I had to restart VS.

Marek Malczewski
  • 654
  • 8
  • 7