“Object reference not set to an instance of an object” when building my cloud project

Question

When I build my solution with a bunch of cloud projects, I see one or more \"Error: Object reference not set to an instance of an object\" messages in the output. When I try

Answer 1

I also had this error when building. Projects within the solution would build independently but building the entire solution failed.

I have learnt usually these types of issues are caused by invalid azure role or configuration files. In my case it turns out a .cscfg config file rename on another branch was merged with my branch but it didn't rename the file – therefore the .ccproj file in my branch was incorrectly referring to the new name but only the old filename existing in the solution. After manually editing the .ccproj with the new filename I closed/reopened the solution and things started working.