The project file cannot be migrated
<p>I got an error message "Operation could not be completed. The project file cannot be migrated. See the migration report for details." When I was trying to add an existing project into a blank solution... and it seems there's doesn't exist any solution to this problem...</p>

<p>Here's how I tried to add those existing project into the solution:</p>

<p>Right click on the Solution menu > Add > Existing Project... > xxx.vcproj > then click Open</p>

<p>The project folder also contain another sub folder and it has a xxx.exe inside, there is also a file called 'xxx.vcxproj' but I could not open it as well</p>

<p>How could I fix this?</p>