This is because Microsoft can block the execution of applications or drivers via the sysmain.sdb file. Use the steps are described in the forum. There is also a thread at VMware forum, where this issue has been discussed. We have this issue also in Windows 10 Version 1809. Maybe the patch changes something in kernel isolation. One user wrote, that it has something to do with changes in Hyper-V and may be present since the release of Windows 10 version 1903. There is a thread at, where a user wrote 'Cannot run VMware WS Pro 14 after KB4517211'. Old versions of VMware Workstation no longer work after KB4522015 update 2019) I got a user comment mentions issues with Vmware workstation. Shortly after I've published the article Windows 10: Issues with Updates KB4522015, KB4522016 / KB4517211 (Sept. Update KB4517211 has been released also via Windows Update. Update KB452201 has been available only via Microsoft Update Catalog, but it is causing several issues (see the knows issues section of KB4522015 and link list below). These are security updates for Internet Explorer, released to mitigate a vulnerability in scripting.

Update KB4522015 has been released on Septemfor Windows 19 V1809 – and Update KB4517211 has been released on Septemfür Windows 10 Version 1903.

Vmware workstation pro 10