As of now, there is no way to fix this issue through a setting or an update. The fix that will solve is to remove the registry key.

Web Remote Workplace Doesn't Work With IE 8

We recommend the following process to set your machine right.

Go to Manage Add-ons in the tools drop down in Internet Explorer to enable Terminal Services ActiveX Control. However, ActiveX control will not be found in the list.  So, this will help:

1. Go to Start menu in Windows, select Run, and type Regedit
2. Find registry key: HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Ext \ Settings
3. Find{7584c670-2274-4efb-b00b-d6aaba6d3850} and then remove it.
4. Close Internet Explorer
5. Run Remote Desktop Web Connection

You should feel a ray of light shining on you now.