Sims 3 won't open (service initialization failed 0x065d0274)

@Doctor_Kuzo  Please clear the EA App's cache:

https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/

and repair the game: open your App game library, select Sims 3, and click Manage > Repair.  This will undo the effect of the Lazy Duchess patch, which may or may not be contributing to the problem, as well as any other changes you've made to the game's program files.  Then try again to play, this time using the Task Manager method.

If that doesn't help, please uninstall Sims 3 and the EA App with Revo Uninstaller (the free version is fine).  If you have any saves or other user content you want to preserve, rename the Sims 3 user folder in Documents > Electronic Arts to something that doesn't include "Sims 3," so Revo won't find it.

Restart your computer, reinstall the EA App, and create a new folder where you'll install Sims 3.  The folder should be on the root level of the drive of your choice, for example C:\Games is fine, but not C:\Program Files\Games.  If you use a third-party antivirus, disable it before reinstalling the App and don't reenable it until you've tested Sims 3 once.  As long as you don't do anything else at the same time, your computer should be safe.

Hey @puzzlezaddict is revo uninstaller safe to use? 

@Doctor_Kuzo  Yes, Revo is safe and reliable.  I have it installed on both my Windows PCs and have been recommending it for years, with no reported problems other than the occasional user error.

@puzzlezaddict Hey, so i now tried it out and i can start and play the game!
but not normally, i do have to do that with the task manager everytime before i press the button in the launcher. 

Should it be like this or should it actually be different?

Thank you for everything btw!

@puzzlezaddict

I could cry right now..I'M SO GRATEFUL FOR YOUR HELP!!! 

i tried the patch and i could start it right away when i pressed the button in the launcher.

so thank you for helping me! i do have another question..my game is lagging and i saw something called "smooth patch from Lazy duchess" you think that could help?

@Doctor_Kuzo  Sims 3 lags at times, as you likely know already.  Whether the Smooth Patch will help depends on the source of the lag.  For example, if the cause is a series of stuck sims (human or animal), then no, it won't help.  In that case, you'd want to install NRaas Overwatch, set Stuck Check Auto-Reset to False (but leave Stuck Check on True), and keep focusing on the stuck sims when you get the notification.  You might find that the same locations are consistent sources of error, in which case you could modify them appropriately.

I would also highly recommend Overwatch, plus ErrorTrap and a few other NRaas mods, in general.  Traffic is essential in certain worlds, and Register can be depending on the world and the expansions you have installed.  For more on these mods, please see this post:

https://answers.ea.com/t5/Technical-Issues-PC/Sims-3-Common-Game-Fixing-Mods-Hero-Approved/m-p/9838855#M244208

Some worlds cause a lot more lag than others as well.  If you're curious about the one you're playing in, let me know what it is.  You can also test in Sunset Valley for comparison's sake—SV has very few routing issues or other problems that cause lag, so it's a good baseline for performance.

But to answer your question directly, the Smooth Patch can definitely help somewhat, it's not a cure, and it won't hurt by itself.  However, the .package file(s) (one or two, depending on the source of the download) should not be used.  They're in a state where they don't work all the time and can cause unpredictable errors, and they don't improve performance in live mode, just loading in CAS.