Year 2016’s first Windows 10 preview build for PC is finally here. Today, Microsoft announced the Windows 10 Insider Preview Build 11099 for Fast Ring members. This new build from Microsoft does not include any attention grabbing announcements or new features, but it is based on bringing structural improvements to OneCore, which is the shared core of Windows across devices.

Windows 10 Insider Preview Build 11099

Gabe Aul, Corporate Vice President, of Microsoft’s Engineering Systems Team, mentioned on the Windows Blog,

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.

Contrary to how leisurely Microsoft has been releasing builds to Fast Ring in the past, the company plans to release accelerated build releases this year with the only disadvantage that these could bring more bugs and other issues to the Windows Insiders.

In case you are not yet ready to deal with the above issues, Microsoft is suggesting you to switch to Slow ring by going to Settings > Update & Security > Windows Update > Advanced options and under “Get Insider Preview builds” moving the slider to the Slow ring.

For now the build 11099 has brought a noticeable fix for the users and that is “the progress dialog when copying or deleting files via File Explorer now shows up as expected”.

For other known issues that you may be interested in, refer Insider Hub says Microsoft.