How do I re-download engine built-in plugin (Common UI) after deleting it?

Hi,
I’m really struggling with UE in the last couple of days… This time, I messed something in the engine’s built-in Common UI plugin (which was located at UE_5.7\Engine\Plugins\Runtime).

Long story short - I tried modifying its code, then I learnt that in order to do that I needed to actually copy it to my project, I didn’t manage to get it to work anyway, so now I wanted to reverse all that I did (I made some changes to the copied files in my project, but ALSO to the files in the engine’s folder, before I learned that I had to do that in my project only). The simplest solution, I thought, would be to simply delete the folder …\Runtime\CommonUI.

The problem is, I don’t see any way to re-download the plugin now. If I open the Editor, then Edit→Plugins, it’s not there (which is sort of reasonable, as it doesn’t exist anymore, but there is also no option to download plugins or anything like that). How do I do that?

Hey there @pagi111! If you ever modify anything in the engine files, you can verify the integrity (which redownloads anything deleted) in the Epic Games Launcher here:

Let me know if this helps!

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Thanks for the answer. I’m marking this as the solution, although I’m not exactly sure how reliable that is.

The reason I’m saying that is because that was exactly what I wanted to do at first, but the ‘verify’ button was greyed out. However, there was an engine update available, so I downloaded it, the Common UI plugin redownloaded as well. Also, now the ‘verify’ button is actually accessible. I don’t know why it was greyed out before - if it was because the engine wasn’t updated to the last version it would be strange, as you don’t always want to have the latest version.

As you had surmised, It was likely due to the update being in the queue, as generally the engine builds only have one location per primary version, so the recent hotfix would have forced an update regardless. I’m glad it worked!