Summary
This article describes an update to Windows 10 Technical Preview, KB3040021, released February 18, 2015. This update will be offered though Windows Updates to users of the Windows 10 Technical Preview, build 9926. This update fixes an issue with installing future builds.
More Information
How to obtain the update
This update is offered when you check for updates, or if automatic updates are turned on, using build 9926 of Windows 10 Technical Preview.
Prerequisites
To apply this update, you must be using Windows 10 Technical Preview, build 9926.
Restart information
The update may require a restart.
Update replacement information
This update does not replace a previously released update.
File Information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.
For all supported 32-bit versions of Windows 10 Technical Preview:
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Windows10.0-kb3040021-x86.cab | Not Applicable | 141,389 | 12-Feb-2015 | 04:21 | Not Applicable |
| Windows10.0-kb3040021-x86.xml | Not Applicable | 446 | 12-Feb-2015 | 04:23 | Not Applicable |
| Wsusscan.cab | Not Applicable | 171,136 | 12-Feb-2015 | 04:27 | Not Applicable |
| Package_1_for_kb3040021~31bf3856ad364e35~x86~~10.0.1.0.mum | Not Applicable | 1,846 | 12-Feb-2015 | 04:13 | Not Applicable |
| Package_for_kb3040021_rtm~31bf3856ad364e35~x86~~10.0.1.0.mum | Not Applicable | 1,465 | 12-Feb-2015 | 04:13 | Not Applicable |
| X86_70db0ea509c58e85f146802248dd23c9_31bf3856ad364e35_10.0.9926.8_none_b2297aa54b94f465.manifest | Not Applicable | 718 | 12-Feb-2015 | 04:13 | Not Applicable |
| X86_microsoft-windows-w..nt-extupdatesupport_31bf3856ad364e35_10.0.9926.8_none_aca029f5f1beb312.manifest | Not Applicable | 7,076 | 11-Feb-2015 | 11:08 | Not Applicable |
| Wuuhext.dll | 10.0.9926.8 | 277,504 | 11-Feb-2015 | 07:22 | x86 |
| Package.cab | Not Applicable | 291,335 | 12-Feb-2015 | 04:23 | Not Applicable |
For all supported 64-bit versions of Windows 10 Technical Preview:
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Windows10.0-kb3040021-x64.cab | Not Applicable | 171,303 | 12-Feb-2015 | 04:19 | Not Applicable |
| Windows10.0-kb3040021-x64.xml | Not Applicable | 448 | 12-Feb-2015 | 04:23 | Not Applicable |
| Wsusscan.cab | Not Applicable | 171,096 | 12-Feb-2015 | 04:24 | Not Applicable |
| Amd64_98dfd7712abd98ba475d1c41686bcd50_31bf3856ad364e35_10.0.9926.8_none_04ae7b1022244418.manifest | Not Applicable | 722 | 12-Feb-2015 | 04:13 | Not Applicable |
| Amd64_microsoft-windows-w..nt-extupdatesupport_31bf3856ad364e35_10.0.9926.8_none_08bec579aa1c2448.manifest | Not Applicable | 7,078 | 11-Feb-2015 | 12:03 | Not Applicable |
| Package_1_for_kb3040021~31bf3856ad364e35~amd64~~10.0.1.0.mum | Not Applicable | 2,077 | 12-Feb-2015 | 04:13 | Not Applicable |
| Package_for_kb3040021_rtm~31bf3856ad364e35~amd64~~10.0.1.0.mum | Not Applicable | 1,694 | 12-Feb-2015 | 04:13 | Not Applicable |
| Wuuhext.dll | 10.0.9926.8 | 371,712 | 11-Feb-2015 | 07:35 | x64 |
| Package.cab | Not Applicable | 290,629 | 12-Feb-2015 | 04:23 | Not Applicable |
References
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates