Problem
When launching Mastercam, the software hangs up at the splash screen on Running Command Line Commands for longer than normal. Once the software finishes launching, changing tabs, right-clicking, and toolpath dialogs are much slower to access and load than expected.
Cause
The Windows 10 Fall Creators Update, Version 1709, has a bug in it which causes a severe decrease in Mastercam’s performance. This Windows update appears to affect versions X8 through 2018.
Solution
First, find out the version of Windows 10 running on the system by clicking the Windows start menu icon and typing winver.
If the version is 1709 and the OS Build number after the is older than 16299.214, Windows 10 will need to be updated. Run Windows Update and make sure that the January 31, 2018 update KB4058258 is installed on the system. If Windows Update is not finding the update for you, download it directly from the Microsoft Update Catalog. https://www.catalog.update.microsoft.com/Search.aspx?q=KB4058258
After installing this update, the OS Build of Windows 10 should now be 16299.214 or newer. This update addressed the issues with the Windows dependency called up during the launch of Mastercam.
