Yesterday, Microsoft issued a new Knowledgebase article for the brave people, like you ant me, that run Windows 10 Technical Preview, build 10041. It fixes a bug where the user name and password box might not appear on the sign-in screen.

The situation

You run the 32bit (x86) version of Windows 10 Technical Preview build 10041 or the 64bit (x86-64) version of Windows 10 Technical Preview build 10041 on a device, or you run Windows 10 Technical Preview build 9926 configured in the slow update ring and you update to Windows 10 Technical Preview build 10041 this week.

You start the device and want to log on.

The issue

When attempting to sign into Windows 10 Technical Preview Build 10041, the user name and password box might not appear on the sign-in screen.

The solution

The solution is to install update corresponding with KB3050653 from Windows Update or from Windows Server Update Services (WSUS).

When you look at the available updates for Windows 10 Technical Preview this month,  in either Windows Update or Windows Server Update Services, you’ll notice this update accompanies three other updates:

• KB3046049 Security update to address vulnerabilities in SChannel (aka FREAK patch) 
• KB3050279 Update to address graphics artifacts and increase system reliability
• KB3050284 March Update with fixes for various issues

Please install these updates to enjoy your Technical Preview experience to the fullest.

Further reading

Windows 10 10041 preview build gets bug fixes, rolling out to Slow ring members
Security Thoughts: Vulnerability in SChannel allows security bypassing (Important, FREAK, MS15-031, CVE-2015-1637)

Related knowledgebase articles

3050653 The user name and password box might not appear on the sign-in screen in Windows 10 Technical Preview
3046049 MS15-031: Vulnerability in SChannel could allow security feature bypass: March 10, 2015
3050279 Microsoft Surface Hub Technical Preview – March Update is available
3050284 Windows Technical Preview March Update (KB3050284) is available