Can't open project property in visual studio 2015 with Unity 5.3.2

I can’t open project property in visual studio 2015 with Unity 5.3.2
So I can’t edit build flags.
When I hit Alt+Enter in solution explore, project property windows blink shortly and closed immediately.
I worked fine with Unity 5.2.1
Anyone with same issue?

Found out the fix!

You have to enable the “Access to project properties” option in the Tools>Options>Tools for Unity>General" section.

Then just restart VS, and it should let you open the properties panel.

I’m having the exact same issue, from visual studio I try to access a project’s proeprties vis Project->Properties, the IDE blinks white for a split second, probably loading the properties page, then instantly shuts.

I have a hunch the Solution file Unity is generating is well, invalid somewhere.

Found the Fix! for VS 2015
Its Same As Venryx.

Go to Tools > Options > Tick “Show All Settings” (Bottom Left) > Search For Unity (Optional) >Tools For Unity > General > Access to project properties = true

This is still an issue as of 5.3.4f. Assuming you want the XML file for use with Sandcastle or other documenting programs, I’ve found a workaround that appears works.

  1. Open the Unity-generated .csproj
    file.
  2. Build. This should create bin and
    obj folders in the Temp folder under
    your Unity project. Your project
    must not be open in Unity for this
    to work, as Unity typically deletes
    Temp upon closing.
  3. Copy the DLLs and XMLs generated,
    such as UnityEngine* DLL, XML.
    Personally I copy these to separate
    folders since Sandcastle doesn’t
    seem to compile with the DLL
    references.
  4. Make a new C# Console program.
  5. Add the DLLs to the Console project’s
    references (in the Solution tab).
  6. Copy your Unity scripts to the
    project (you can Add Existing
    Files/Folder to import).
  7. You can now properly set the XML Building preferences in Properties.
  8. Build this Console program. It should build fine.
  9. In Sandcastle, hook up the Console project’s EXE, XML, and CSPROJ along with the Unity-generated XMLs.
  10. Build the Sandcastle documentation.

This should produce the desired Documentation.

It isn’t visual studio nor unity. The issue is that in the latest version of vstu, they (vstu) decided in their infinite wisdom to enforce something completely arbitrary by not allowing us to open the properties window at all. Conditionals have to be set in unity, saved, then updated in vs. Why? Who knows. Evidently the folks who develop vstu have decided we can’t be trusted with stuff like that…

This does not fix my issue. I ran into this tonight. Changed the setting. It still won’t open up my project properties when I try to edit them to change the language version from 4 to 6.

For those that are still having this problem, start with the solution from @Venryx above and then try this:

That did it for me.

still not worked for vs2019 & unity 2019.4

Apparently Unity5.3.2 is not compatible with Vuforia? 5.3.1 https://developer.vuforia.com/forum/unity-extension-technical-discussion/unity-532-and-vuforia

Patch Unity 5.3.1p3

However, when the Unity 5.3.1f1 check, so an error or have a crash often I think that the patch is good. Details: http://unity3d.com/jp/search?gq=Unity%205.3.1p3%20patch