While deployment of Windows 10 version 1809 (update in October 2018) has been problematic, Microsoft tries to avoid sending Update to configurations such as It knows, just does not work properly.
One of these situations involved PCs with Apple's iCloud client. The system will break when you try to synchronize or update Shared Album when it is used on Windows 1
Both problems seem to be resolved now. Apple has released iCloud for Windows version 7.8.1, which resolves both crash and poor version control. After upgrading to this version, Windows 10 Update will no longer be blocked and will be installed as usual.
Several other upgrade blocks remain in place. Intel has apparently accidentally sent some display drivers to OEMs that used or enabled any unspecified, unsupported feature in Windows; this block installation of the update. The presence of the F5 VPN client also blocks, as certain VPN configurations cause network connection loss. Certain Trend Micro applications are known to be incompatible and await Trend Micro update.
Finally, there is a blocking issue that may not be resolved. Old Radeon video cards that use the HD2000 and HD4000 GPUs are no longer supported by AMD. By using the latest AMD drivers with these cards, it results in random bluetooth systems along with other, more favorable crashes. Consequently, Microsoft does not send the update to anyone with an HD2000 or HD4000 card.
If this block remains in place, systems with these cards will soon stop receiving security updates. First hit the market in 2007 and 2008, these cards are probably long in the tooth, but they are probably sufficiently useful for regular use of desktop windows.
This is not the first time that a GPU driver issue has been fixed. Windows 10 version 1703 was blocked for systems that use Intel's Clover Trail processor due to incompatibility with the GPU driver. As such, they were fixed on version 1607. In that case, however, Microsoft already committed to long-term security support for version 1607, so while the systems failed to get the latest Windows release, they would not be exposed to a certain security risk.
However, this is not the case this time, since version 1803 will not receive long-term support. It is not clear how this particular problem should be solved.