Please upload the complete the assignment. You’ve only uploaded the Main.xaml as such we won’t be able to open the Invoked workflows, particularly the System1_Login.xaml which is where the issue is most likely occurring.
Right now here are my possible causes for the issue:
- Invalid browser used, although as you’ve mentioned you’re using IE, so this is an unlikely cause.
Most likely cause, is the argument used in the value for the URL in the open browser. Meaning that whichever argument you used (commonly System1_URL) was not configured properly.
Try uploading the entire assignment folder so that I can check properly.
Have a great day!