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Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Thu 14 Oct 2021 10:09
by mrmiagi0101
The latest MS Windows 10 Securitry Update causes Entity Developer to stop working!
KB5006670
@Devart you have to fix this soon. Nobody can work anymore with ED.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Thu 14 Oct 2021 11:41
by sbauder_sre
I'm also experiencing this issue.
KB5006670 was recently pushed to our machines. After the reboot Entity Developer hangs at the splash screen.
There is a crash reporter window that show in the alt+tab list but it won't focus.
Edit: I've found that if you go into Task Manager and kill the Entity Developer task with the "generic window" icon then it will finish loading as expected. I don't know if there are any other side effects at this time.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Thu 14 Oct 2021 17:28
by samminnella
I can confirm that uninstalling KB5006670 is a VERY temporary fix.
Devart please acknowledge you are working hard on this issue.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Fri 15 Oct 2021 10:26
by Shalex
Thank you for your reports. We have reproduced the issue related to Windows 10 Update KB5006670 and will notify you about the results of our investigation.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Mon 18 Oct 2021 10:18
by myilmazakbas
Unfortunately uninstall the update is not working anymore, i am facing same problem.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Mon 18 Oct 2021 20:45
by Idas
Just found out you can still use the command line utility (ed.exe) to generate code from your model. Maybe this will help someone.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Tue 19 Oct 2021 08:58
by AnyDev
Creation of an Devart Entity Model fails with the following message of the Visual Studio (2017 and 2019):
"An item with the same key has already been added."
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Tue 19 Oct 2021 14:13
by sbauder_sre
Hi Shalex, any update / ETA on the fix for this?
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Wed 20 Oct 2021 14:26
by kambbado
Idas wrote: ↑Mon 18 Oct 2021 20:45
Just found out you can still use the command line utility (ed.exe) to generate code from your model. Maybe this will help someone.
Would you be able to provide an example on how to update an exiting model using ed.exe?
I have no more KBs to uninstall. So I'm stuck. There are no other workarounds.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Thu 21 Oct 2021 15:46
by Shalex
The bug with launching Entity Developer after applying Windows 10 Update KB5006670 and Windows 11 Update KB5006674 is fixed. Please upgrade to Entity Developer v6.12.1354. Refer to
viewtopic.php?f=32&t=48906.
Re: Windows 10 Update KB 5006670 is breaking Entity Developer
Posted: Fri 22 Oct 2021 09:54
by mrmiagi0101
I can confirm, with the last ED Version, the Visual Studio integration and the Standalone ED are running again even with the Windows Update installed.
Good job Devart!