'Visual Studio not showing all Projects in solution

I'm not sure why, but Visual Studio is not showing all the projects in my solution. I need them to show so I can set as default project under solution explorer. I'm not seeing a fix for this issue in a general internet search. The closest I see is VS not showing files folders, but this is different than my issue. Hopefully there is an easy way to fix it, without adding things again piecemeal. My co-workers can see their complete set of projects in solution explorer so it must be a corruption in my workspace.



Solution 1:[1]

I had to copy out changed files in my workspace, fix my permissions/ownership on my directory (it was no owner instead of me), re-do the mapped drive the workspace was on, re-do the shortcut to the Visual Studio project (even though it was supposed to theoretically be the same place I mapped), re-pull the project down, and copy my changes in again. At this point Visual Studio had the missing solutions in it again so I could set startup project and run the debugger. I'm not sure how the ownership/permissions got messed up. I think at one point the other office had a server go down, and maybe my permissions/ownership got mixed up then. I'm not sure why VS wasn't showing the missing projects, but it's fixed after doing the above.

Solution 2:[2]

Open your ".sln" project file using Notepad. In this file you can observe listed projects like below

Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "test.myProject.Data", "test.myProject.Data\test.myProject.csproj", "{6D7F7B84-F3BD-4A19-A069-D144C345B887}"
EndProject

Please add if there any missing projects. If you have old back up or co-workers file, Just copy and paste missing projects to this file. In my case it works !!

Solution 3:[3]

close vs , delete .vs folder then open vs again. it works for me.

Solution 4:[4]

I found that re-adding the existing project to the solution worked for me!

Solution 5:[5]

I had the same issue where my colleague saw 1 more project on his computer.

I deleted my .sln file and got the exact same version as he. Problem was still the same.

Solution was: I had an unloaded project. Apparently this is safed in a local user setting file (probably the .suo file). I looked for the unloaded project and loaded it again.

Solution 6:[6]

  1. Close the VStudio entire project, go to the main project folder and click on the .sln file to load the entire project agian.
  2. go to solution explorer see which are having (unload), right click and load project with dependencies
  3. sometimes check if the project startup has changed, if changed just right click on the related project and set as project startup

Solution 7:[7]

This .sln file structure breakdown offers a great insight on how projects are able to be found and populated into the project hierarchy. My .sln file had lost all its project persistence blocks and thus I had 0 projects under my solution. I copied the blocks from a a previous git commit and this fixed it. I still don't know why the blocks disappeared or the whole .sln file changed

Solution 8:[8]

I had the same issue. After opening the Visual Studio in Administrator mode it started to work.

Search for VS->Right click-> "Run as administrator"

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Michele
Solution 2 Thinira
Solution 3 funbrain9
Solution 4 Jennifer
Solution 5 kabeleced
Solution 6 suntosh aqula
Solution 7 Rachier Alal
Solution 8 NKA