Microsoft recently started rolling out October cumulative updates to Windows Phones, PCs and Tablets with some improvements. Windows 10 Mobile Creators Update also received Build 15063.674 with unknown fixes. The update is available for all Windows Phones with Creators Update but you may not be able to install the new Patch Tuesday update if you are a Windows Insiders.
While the Fast and Slow Ring Insiders are locked to receive updates from the development branch, the Creators Update phones on the Release Preview Ring lets you only get app updates and as a result, the new Build 15063.674 hasn’t been rolled out to the Release Preview Ring Insiders yet.
If you would like to upgrade the Windows 10 Mobile Creators Update device to latest Build 15063.674, you will need to stop receiving Insiders builds. As soon as you will opt out of the Insider program, regardless of what Windows Phone you have, the Build 15063.674 will start downloading to your Windows Phone.
Assuming your phone is on the Creators Update and is set to receive updates from the Release Preview Ring, go to Settings > Security & Updates > Windows Insider Program and click on “Stop Insider Preview builds”. The phone will restart and you’ll be able to download the Windows 10 Mobile Build 15063.674 to your Creators Update phone.
You can once again switch back to the Release Preview Ring after installing the cumulative. You may, however, need to repeat the process next month on Patch Tuesday. The new build for Windows 10 Mobile brings no new changes, however, the performance and security related fixes are part of the cumulative update.