Windows 10 KB4458469 applies to version 1803. This update changes the OS build to 17134.320.
- Addresses an issue that prevents some Bluetooth devices from pairing with Windows.
- Addresses an issue that occurs when enabling BitLocker from a local administrator account.
- Addresses an issue that occurs when using low-level mouse hooks with high integrity-level processes.
- Addresses an issue with the file previewer for .html, .mht, and email (MIME) attachments in Microsoft Outlook.
A boatload of fixes for the universal C runtime which has caused a lot of apps to fail.
Windows 10 1803 has been running increasingly slow on our Lenovo machines suggesting it may be time to install Windows fresh. We are buying more SSD drives to improve laptop performance.