To settle EU antitrust case Microsoft was forced to display a browser choice ballot screen to all EU based users.
This is normally displayed only once, but you can prevent this completely via a simple registry update.

Disable browser ballot via Registry

• Open registry editor (regedit.exe)
• Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\BrowserChoice
  If BrowserChoice key doesn’t exist, create it
• Create new DWORD type value with name “Enable” and value data “0“

Disable browser ballot via Group Policy

• Create new Group Policy Object (GPO) and open for editing
• Navigate to Computer Configuration > Preferences > Windows Settings > Registry
• Create a new Registry Item
• Action – Update
• Hive – HKEY_LOCAL_MACHINE
• Key Path – Software\BrowserChoice
• Value Name – Enable
• Value Type – REG_DWORD
• Value Data – 0

• Save changes and deploy GPO to your domain or appropriate Organisational Unit.