Users of devices running Microsoft's (NASDAQ: MSFT) Windows Phone 8 will have to wait a little longer to upgrade to Windows 10 Mobile.
Microsoft informed its partners via email that deployment of the OS for older phones will now occur "in early to mid February," VentureBeat reported. The company also delayed a second monthly service update for the Lumia 950 and 950 XL, which initially received the OS in December.
The news marks a second setback for Windows Phone 8 users hoping to access the new OS. In December, Microsoft delayed pushing a Windows 10 Mobile upgrade to some existing users of Windows Phone 8 and 8.1.
Windows 10 Mobile came to market last year on the company's flagship Lumia 950 and 950 LS; it's also available on the low-end Lumia 550. Microsoft has yet to reveal exactly which existing handsets will support the new platform.
The success of Windows 10 Mobile is crucial for a company hoping to finally grab a substantial share of the smartphone market. Windows runs on just 2.6 percent of smartphones worldwide, according to recent data from IDC.
- see this VentureBeat report
Microsoft delays upgrade to Windows 10 Mobile
Sprint and Microsoft launch carrier billing for Windows 10 users
Microsoft to let Android and iOS developers create apps that will run on Windows 10
Microsoft to release flagship Windows 10 phone later this year, unveils mid-range Lumia 640 and 640 XL in meantime