The latest build appears to break the WiFi adapter, resulting in an inability to detect networks.It's not yet clear how widespread the issue is, but it seems to be affecting a fair amount of users.
Unfortunately, users have reported that reverting to an older build doesn't work.
The only way to return to normal functionality at the moment is to install a clean production build. Several users have tried their own troubleshooting, but to no avail.
Support Engineers recommended reinstalling network adapter drivers via functioning PC. However, this resulted in a “Windows cannot initialize the device driver for this hardware,” error.
However, thanks to community feedback, Microsoft is now aware of the issue and is working on a fix.
A spokesperson addressed the issue on the Answers community, and said the following:
“Hello Windows Insiders,
After the release of build 14915 to the Fast ring for PC yesterday, a Wi-Fi bug has been discovered that is impacting a subset of users. Please review the following:
- Surface Pro 1
- Surface Pro 2
- Wi-Fi adapters using the Marvell driver
- (There may be other similar drivers affected, research is ongoing)
- You may review in Device Manager to see if your PC is affected.”
“The percentage of users impacted is limited, but for those affected, all Wi-Fi functionality is lost and there is no temporary fix to restore Wi-Fi on this build given the nature of the bug. Affected users will need to use a wired connection if available or roll back to the previous OS version on their device to bypass this issue.
Our Engineering teams have quickly completed a root cause analysis of the issue and are working to get the fix checked-in to make it available in our next flight.”
Some users are rightfully angry about the issue as Microsoft didn't notice before release. This serves as a good reminder of the instability of Insider builds, which don't always function as daily drivers.
Users worried about data loss will be patiently awaiting the next Redstone 2 build, which the company will hopefully fast-track as a result.