So anyone tried to roll back update 1809? and is this a real fix?
does it mean a re-install and you will lose all your files? How about the game save?
In case it fixed and we update back to 21H1, then we will get the bug again?
I think that this is completely not feasible solution, unfortunately this is a very strange bug and the solution for this bug will be hard to find. Consider that now that I’m playing on my summer computer with the same windows update of the my main “bug affected” PC I don’t have any problem at all.
Same problem here having a 1080 too and Microsoft Store. Tried all the things here mentioned before too with (of course) no result. I really hope they find a solution. Reinstalling Windows 10 can’t be the solution.
After not having played for a while i too have this problem.
However i can not believe a bug that was not present before is introduced and that their official fix is to roll back to Windows 1809.
A version of Windows that is not supported anymore since 10 november 2020.
They should remove this from their FIXED list ASAP.
Running a non supported version can come with security risks among others and is never sound advice. Certainly not from an influential organisation.
My latest ticket response is that they’re shutting my ticket down “as we will have an announcement when a fix is found”. Guessing their solution will appear on 9th November…
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Same here.
I’ve resorted to installing it on my series X, which actually might look a bit better than my PC, but hard drive space on that is at such a premium, I’d probably still rather have it on PC.
At least we don’t need to worry about getting the percentage up for exclusive cars any more now that they’re done adding new ones.
Hopefully Nov 9th won’t be the solution 
I haven’t played Forza Horizon 4 for a couple of weeks now because of these bugs. Now I’ve tried starting the game today and it almost instantly crashes to desktop now. 
Just wanna make sure this doesn’t get swept under the rug. Devs gotta realise that rolling back Windows to an unsupported version is not a solution. Yet to see official acknowledgement of this issue!
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I’ve not much hope left that this bug will ever be fixed. It’s still not mentioned in the list of known issues. My support ticket also got closed. I think I’d rather buy Forza Horizon 5 for Steam since the Steam version of FH4 is not affected by this bug. I’m a little afraid that the Windows Store version of FH5 could also be affected by this bug because they won’t write a complete new program code for FH5 and I don’t know how deep hidden this bug is in the code, so maybe they unknowingly carry it over to FH5. It’s really a shame, I had so many hours of fun with FH4 with no problems and now it has to end like this. This bug really spoiled my fun since I can’t drive carelessly through the open world anymore.
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Yea, they basically told me to reset “Windows” which basically deletes all your apps. No guarantee that works so not wasting any more time on this. Everything else on my machine is fine, so not willing to spend that much time on this. I had some back and forth with support and told them I was not willing to do a reset and then reinstall all my apps and said they could close my support ticket. They then wrote back and said they would call the issue as “Solved” I corrected them and said it was “Closed” but not “Solved.” Seems this bug is too hard for them and they are giving up.
Pretty drastic solution for a fix that has no guarantees of working. A lot of users also may not be tech savvy enough to do that.
I was waiting to see if they’d address the issue in the forza monthly stream, but yet again there was no mention of it. Just because it’s only happening to a small group of people shouldn’t make it any less important!
I’ve had an absolutely amazing time with Horizon 4 the past three years, but like Noodles mentioned, having it end on a sour note like this is a real shame and dented my confidence of the PC version of Horizon 5.
Update came today.
BUT still BUG!!!
Just received a new update for FH4 and of course the game still crashes. 
A follow up from a previous ticket where I sent the support the Event Viewer. Here the reply:
"We are currently looking into this and your ticket will be added to our investigation. For now we are going to close this ticket as we will have an announcement when a fix is found, if we need more information we will reach out for now if you can please send us an event log,
If your game is still crashing, can you please go through the following steps the next time the game crashes?
Open Event Viewer by pressing the Windows key and type “Event Viewer”
Click on the “Windows Logs” folder
Click on “Application”
Click on the “Date and Time” column to sort and look for “Application Error” around the date/time your crash happened.
After you find the Application Error for the game, you will notice “Information"on the right.
In this tab there will be a ton of information listed. Please find the “save selected events” and send that to us.”
Yeah I got the same exact message a few weeks ago when they closed my ticket down. The fact that it hasn’t even been put on the Known Issues page is deeply concerning though, doesn’t fill me with confidence that they’ll get it sorted in good time before the new game releases.
It is on known issues page, please see here
FIXED
WINDOWS 10
Crashing when hitting a speed zone. Please roll back to Windows version 1809.
This is too much AWFUL !!!
Nothing is FIXED!!
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This entry in the Fixed section is old, the bug already existed in 2018, until it got fixed. Now it came back. Look at the patch notes from December 13th, 2018:
“Fixed an issue where the latest Windows 10 OS was causing a crash when entering speed zones.”
Hi everyone,
just logged in to say I also have this issue. Deep GPU driver removal and reinstall does nothing, but I’m not willing to roll back my Windows update to run this game, when everything else on my computer runs fine. MS Store version of the game. Please get this sorted out, I had a nightmare getting this game running on launch but has been perfect since then until now, to suddenly have new bugs appearing is beyond a joke and does not bode well for release of FH5 (for me at least).