UPDATE: Article updated on 26 January, 2016 with new method.
Microsoft Edge is the fast and new browser available in Windows 10. You can review this browser in following article:
[REVIEW] Learn about new features in Microsoft Edge
When you first time run Microsoft Edge, you’ll see the Welcome to Microsoft Edge screen (refer screenshot shown below). This is quite similar to welcome page presented inside Internet Explorer (IE). Recently, we came around an issue in a domain environment with this welcome page. Actually, on some of the frozen machines, the welcome page keeps appearing after every reboot. Obviously, this will turn clients into frustration and they’ll switch themselves to any other browser.
But if you want to keep them working on Microsoft Edge, then you need to disable the first run welcome page permanently. Unfortunately, there are no Group Policy settings available for this atm. Also, the ways to disable welcome page of IE doesn’t works for this case. Then later we found the registry setting for this welcome page. After tweaking the registry, the problem no longer exists.
So, if you’re also looking forward to disable welcome page for Edge, follow these steps:
How To Disable Welcome Page In Microsoft Edge
Registry Disclaimer: The further steps will involve registry manipulation. Making mistakes while manipulating registry could affect your system adversely. So be careful while editing registry entries and create a System Restore point first.
1. Press
+ R and put regedit in Run dialog box to open Registry Editor (if you’re not familiar with Registry Editor, then click here). Click OK.

2. In the left pane of Registry Editor, navigate to following registry key:
HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\MicrosoftEdge\Main

3. In the right pane of Main key as shown in above mentioned screenshot, look for registry DWORD (REG_DWORD) named IE10TourNoShow. Double click on this registry DWORD to modify it.

4. Now, in Edit DWORD Value box, set the Value data to 1. Click OK and close Registry Editor. Reboot the machine to make changes effective. After restarting the system, welcome page for Edge will no longer appearing.
That’s it! See this fix, if you can’t add new search providers in Microsoft Edge.