Windows 10 build 17661 bugs: Install errors, Windows Security issues, and Much More

Microsoft recently rolled out Windows 10 build 17661 to Fast Ring Insiders and Insiders who chose to Jump Ahead. This new build introduces a collection of new features which will be available on Redstone 5. The objective of the Windows Insider program is for user to test and code of their upcoming Windows 10 variant so as to detect any significant bugs.

The Redmond giant already published a list of known issues impacting the release, but as it happens with each new build, Insiders came across a lot of new bugs. We scoured Microsoft’s forums to identify the most common Windows 10 build 17661 issues recorded by Insiders and we’ll record them below.

Windows 10 build 17661 problems

1. Install fails

Many Insiders obtained error 0xc1900101 when they tried to set up the hottest Windows 10 build. Their computers quickly reverted all of the changes, and they’re now stuck on the previous build release.

If you also encountered this problem, follow the instructions available from the troubleshooting manuals listed below:

2. The’Free Up Space Today’ button is inaccessible

3. Windows Security doesn’t work

Microsoft also revamped the Windows Defender Security Center and named it Windows Security. It seems that this name change also brought along one minor problem — Windows Security is totally blank when users start it for the very first time. The good thing is that a few restarts usually fix the issue.

4. Copy doesn’t work on Edge

Using the copy function on Edge often neglects with this build. The components that consumers replicate do not go to the clipboard.

These are the Windows 10 build 17661 issues. As you can, this build version isn’t influenced by serious issues such as system freezes, crashes, BSOD mistakes and so on. If you already installed assemble 17661 on your machine, use the comments below to tell us more about your expertise.