Owners of older Macs or those with out-of-date versions of Boot Camp are being blocked from updating Windows 10 to version 1903.
Users of affected Mac devices that use Boot Camp attempting the update will see an error message warning about a problem with the Mac HAL driver 'machaldriver.sys' on their Windows 10 installation. 'Your PC has a driver or service that isn't ready for this version of Windows 10,' the message reads.
For information about the amount of free space needed, see the Apple Support Article Install Windows 10 on your Mac with Boot Camp Assistant. Before you begin. Before you install Windows, make sure you back up important files. You can use Time Machine or any other method to back up your files. I installed windows 10 on my MBA 2015 11' with Boot Camp, did everything, installed the drivers using the support software. But, whenever i tried to open a game ( far cry 2) it crashed. Games freeze or crash randomly on Windows 10 via Bootcamp Hey I’m looking for help. I just bought myself a new 2017 iMac 21,5” The Specs are: Intel Dual Core I5 2,3 GHz boost up to 3,6 8GB RAM Intel Iris plus graphics 640 And Windows is running on a External SSD.
'No action is needed. Windows Update will offer this version of Windows 10 automatically once the issue has been resolved,' it concludes. Microsoft advises it is working on a resolution and estimate it will be available in late July.
According to a Microsoft support page found byWindows Latest, the problem occurs with Macs released before 2012, as well as newer Mac models that use older Boot Camp versions or have Windows Support Software drivers with a compatibility hold in place. More specifically, the problem lies with the identified driver dated for September 24, 2011 or older in the Windowssystem32drivers directory.
As a workaround, Microsoft advises updating the Boot Camp Windows Support Software drivers could replace the driver in question and enable an update to go through. Microsoft suggests users can check for Windows Support Software updates in the Mac App Store and also links to an Apple support page dealing with installing the Windows Support Software itself.
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This is not the first time Microsoft has prevented an update for Windows 10 based on software connected to Apple. In November, Microsoft stopped users of Apple's iCloud for Windows tool from updating to 1809, due to issues with updating and synchronizing shared albums.
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