Windows 10 Insider Preview Build 11099 arrives on the Fast ring

It’s been a while since we’ve had any new Windows 10 preview builds, thanks to the holiday season, but Microsoft has at last pushed out a new build to the Fast ring. The software giant plans to make the Fast ring live up to its name this year with an accelerated release schedule.

In the future Microsoft’s criteria for releasing builds to the Fast ring will be much closer to its criteria for releasing them to its internal rings, which means new builds are likely to be buggier and suffer other issues. Build 11099, which is available for Insiders to download now, should be relatively stable however, as Microsoft has had a while to iron out any big problems.

The new build doesn’t contain any exciting new features. In fact it mostly makes structural improvements to OneCore, the core that Windows 10 shares across devices. This will, however, pave the way to greater changes down the line.

Explaining the improvements, Microsoft’s Gabe Aul says:

The code refactoring and other engineering work we’ve been doing to optimize OneCore is nearing the point where we will be ready for teams to begin checking in new features and improvements. It will still be a few builds before any really noticeable changes show up, depending on when teams begin lighting up new features in their areas. We’re excited for Insiders to use this build to validate the work we’ve been doing to OneCore, so give this build a try and let us know of any issues you run into via the Windows Feedback app.

This new build fixes a known issue from the last one with the progress dialog when copying or deleting files via File Explorer now showing up as expected.

As always, with Fast ring builds, there are other known issues to be aware of, and the details for those now appear in the Insider Hub. These are as follows:

•  Log on for devices using Citrix XenDesktop may be broken. It is recommended that Insiders that use XenDesktop skip this flight by moving to the Slow ring.
• Applications that depend on Adobe Flash may crash upon launch. This will affect some version of Skype, QQ, WeChat, etc. This does not affect Microsoft Edge or Internet Explorer.
• With this build, defaults for some applications will be reset. Music & Video will default to Windows Media Player. This can be reconfigured opening Cortana or Search and searching for "Choose default apps by file type" to open the correct settings page.

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