Windows 10 Mobile build 14977 failing with error 8007007B for some users

If you hit error 8007007B installing the latest flight of Windows 10 Mobile, you'll have to wait until the next flight, Microsoft says.

After weeks of waiting, Microsoft is now releasing a new test preview for mobile devices. This time the company is pushing Windows 10 Mobile build 14977 to the Fast ring with a small set of improvements and changes, and Microsoft Edge on mobile get support for epub file format.

However, some phones may get the error 8007007B, which causes the phone to fail to install today's update. There is a Microsoft community forum thread dedicated to the topic, which was known prior to the update going live.

Indeed, the same error was noted in the original changelog notes posted for the build's announcement. Microsoft said this error may be seen on devices with "8GB of internal storage such as the Lumia 550".

Microsoft explains that if you come across error 8007007B you won't be able to install this flight. Furthermore, the company notes that there isn't a workaround, and you'll have to wait until the next Windows 10 Mobile build.

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