Web Performance and Load Test Project error set

When we create a Web Performance and Load Test Project, we often encounter the following problems:

1. When you click Add Recording,

The record tree on the Left does not appear:

Solution:

Open IE Manage add-ons:

Enable "Microsoft Web Test Recorder 12.0 Helper ":

 

2. Failed to upload an event.

Solution:

Copy the upload files to project, and set the 'Copy to Output Directory 'property in properties window to 'Copy alway'

Double click. testsettings, add the upload files to deployment:

Finally, upload successfully:

 

3. error 401 reported

Click Set Credentials and enter the user name and password: