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How to disable the new default behavior for handling user information in HTTP or HTTPS URLs
To disable the new default behavior in Windows Explorer and Internet Explorer, create iexplore.exe and explorer.exe DWORD values in one of the following registry keys and set their value data to 0.
For all users of the program, set the value in the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Internet
Explorer\Main\FeatureControl\FEATURE_HTTP_USERNAME_PASSWORD_DISABLE
For the current user of the program only, set the value in the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_HTTP_USERNAME_PASSWORD_DISABLE
from here: