Chrome Version       : 51.0.2704.103
OS Version: 10.0
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari 5: FAIL
  Firefox 4.x: FAIL
     IE 7/8/9: OK

What steps will reproduce the problem?
1. Log onto a Windows 10 machine. 
2. Launch Chrome
3. Visit a web site that makes a TBAuth call. For example, http://tbauth-server1772.cloudapp.net/client/login.html
4. 'External Protocol Request' dialog box appears with the following actions: (1) Launch Application, (2) Do Nothing, (3) Remember my choice for all links of this type.

What is the expected result?
I would expect that this protocol handler is white listed so that I never see this prompt. For example, when I click on the mailto protocol handler, it simply opens up my default mail client without a prompt.

What happens instead of that?
A prompt appears that requires me to either (1) Launch the Application or (2) Do Nothing. I also have the option to "Remember my choice for all links of this type".

Please provide any additional information below. Attach a screenshot if
possible.
Screenshot attached.

UserAgentString: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
 

Deleted: tbauth - External Protocol Request.PNG 31.2 KB

	tbauth - External Protocol Request.PNG 31.2 KB View Download