• VSCode Version: May 2017 (version 1.13)
• OS Version: Win10

Steps to Reproduce:

1. Write a link in a file, such as E:\XXX in ReadME.md:
   

2. Ctrl + Click:
   

3. And then got an error:
   

4. Here are the develop tool report:
   

5. In some times, the editing file would be closed unexpected also.

Reproduces without extensions: No