How to set “Use cellular instead of wi-fi” with Group Policy.

Recently, a couple of clients had this issue with their Windows 10 notebooks. They were automatically switching over to mobile broadband/WWAN network in locations where wifi reception was poor. This was not the preferred option for their office environment because staff were familiar with controlling mobile broadband manually (and the associated costs!).

We found the option: Settings > Network & Internet > Cellular > Use cellular instead of Wi-Fi (shown below) – Disabling this setting had the desired outcome. But there was no matching group policy.

UseCellularInsteadOfWifi - How to set "Use cellular instead of wi-fi" with Group Policy.
Windows 10 1809 options under Settings > Network & Internet > Cellular

A little time with procmon highlighted that it’s controlled via the following registry setting:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WcmSvc\CellularFailover
AllowFailover (REG_DWORD)
0 = Never
1 = When wifi is poor
2 = Always

You can apply this across your fleet by using a custom Group Policy Preference.

David Stagg

David speaks openly and honestly – he cares about every customer. He considers the big picture, but gets what’s going on in the detail. For David, Endpoint Technologies are all about supporting the people who use technology every day.

David also has some miles behind him, with 20 years of IT project experience whilst growing multiple consulting firms.

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