Visual Studio 2015 - devenv.exe - Unknown Hard Error

Question

When i open a project it fails with

Anybody has a solution for this?

I tried those steps:

1. Restart Computer
2. Restart Visual Studio
3. Start Visual Studio in Safe Mode and reset all windows
4. Deleting my complete project folder and reopen the solution from source control doesnt help
5. Creating a new project works

Observation:

• Visual Studio starts normally without loading a project.

Answer 1

Problem Solved!

I wanted to use TypeScript in this project. This dialog came up. I answered with yes.

But Visual Studio somehow was not able to Update TypeScript.

Next we looked a Tools > Extensions and Updates and updated TypeScript manually.

After the successful TypeScript update the solution opened normally!