The Sims Medieval launch error. Installation verification failure

I just redeemed an old copy of The Sims Medieval on the EA app yesterday. I installed it through the app, but when launching the game, the main menu appears followed by an error message saying the installation verification has failed and that the installation is incomplete and so the game cannot be played. When the error is closed, the game shuts down. I've tried repairing the file numerous times, as well as clearing cache files and restarting the PC, but it's still not working. Any suggestions?

Bethgael
2 years ago
@EA_SolaireI am no longer getting the verification error after installing the game via my disks, and I can now use the EA app to launch the game after this [see seventh attempt 🙂 ]. In fact, yesterday I added 15 hours to my play time. 🙂 I think my game crashed once? But other than that it ran smooth as butter.[ NB for anyone else who reads this: I did have to edit my graphicsDB.sgr in the game/bin folder to have the game recognise the RAM to the 4GB limit for the 32-bit engine on 64-bit machines, just like you do for TS3. Easy google search to find out how (not sure what the rules are here for linking the how-tos here 🙂 ). This is not, however, relevant to to original error].

Having said that, I do still have the "purchase the game option" in the app as of this morning. I'll take a screenie and add it to this post in a sec. 🙂

ETA images. I also popped up an image showing P&N is installed, just in case it's needed. Also, apologies for the weirdo images. Paint resizing.
Edited again to add: I checked just in case it's relevant, even the MEcubed Legendary Edition, purchased via Steam and installed via Steam, doesn't have that "purchase" option available.

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xfish726
3 years ago
@XDomina It's a miserable existence. I just went through the hoops with a representative that barely even helped. Just gave me faulty steps to fix the issue, and when I told them they didn't work, he just told me that a bunch of other people reported that too and they are "working to fix it." Twenty dollars down the drain until they "fix" it.
XDomina
Rising Adventurer
3 years ago
@Tremayne4260 Sorry for delayed reply, I'm on Windows 10. And I don't have Sims 3. I did see on another thread where people were getting the same identical error message on The Sims 3. I'm half thinking of getting EA play to install it and test that out..
Tremayne4260
Hero
3 years ago
@XDomina , are you playing on Windows 11 or Windows 10? And do you have Sims 3 and is it running ok for you?
XDomina
Rising Adventurer
3 years ago
Same exact problem here. I've downloaded the game through Origin, and through EA play, several, dozens of times.

I tried uninstalling Origin and the EA app... so it's not cache.

I tried changing game file location (from C: to D:, in and out of Program Files), and even to change the game's language to no avail (I do get the different versions of the message for the languages though)

I've contacted customer support, and they basically said: "it's not us!", but did not give any real indication of what might be causing the problem.

Atm, it is impossible to play the game.
Tremayne4260
Hero
3 years ago
@5unfl0w3r How are you trying to launch the game? EA App or Origin? And do you have a new Windows computer?
5unfl0w3r
3 years ago
I got The Sims Medieval yesterday, and it installed and launched fine. But, it soon came up the error message "installation verification failure" for me too, before shutting the game down. I tried uninstalling and reinstalling, repairing the game, deleting the cache from the ea app, even restarting my computer. But, nothing is working for me, and I don't know what else to do. I'm not able to contact anyone on the EA Support team, and I just want to fix this issue and be able to play it.
DaFallenKing
3 years ago
@tullymoon so still works though the ea app as I'm still getting this issue.
tullymoon
3 years ago
The solution for me was, install and launch the game through Origin. 🤨
mate54
Hero+
3 years ago
@tullymoon
Have you checked whether the game works when launched from Origin?
When The Sims 3 (64-bit & Metal) launched, some players encountered the installation verification error, and it seemed to have been caused by faulty (for the lack of a better word) game entitlements, so they had to have their games re-registered through EA support.
Since The Sims Medieval is generally registered through The Sims 3 website, using the same email as your EA/Origin account (Origin won't accept the code and will instead direct you to thesims3.com), can you try entering the code there as well?
https://www.thesims3.com/registeragame.html
If that fails, I recommend contacting EA support via live chat.
https://help.ea.com/contact-us