Changes are not allowed if the assembly has not been loaded

ASP.Net Edit and Continue on Visual Studio

ERROR:

Changes are not allowed if the assembly has not been loaded.

Visual Studio enable edit code during debugging only on platform x86 and when some options are checked/unchecked. See below:

1.  Tools > Options > Debuging > Edit and Continue
   
   


2. Tools > Options > Debuging > General
   
   
   
   


3.  Solution Explorer > [ProjectName] > Properties > Web





4. Debug > Configuration Manager
Editing code during debuggind is possible ony with platform x86.





5. Solution Explorer > [Nazwa projektu] >  Properties > Build