Question: Why does macOS need to verify LibreOffice each time after a restart? I haven't updated the app in a while, and after the first verification it opens normally the next time. This is annoying and it takes a long time (about a minute). This should happen once, after installing (in the /Applications folder), not repeatedly. This doesn't happen for other apps. 

[![Verifying Libreoffice App](https://i.stack.imgur.com/mLnnj.png)](https://i.stack.imgur.com/mLnnj.png)

**How can I make macOS stop verifying LO after a restart?**

NB: Saw the same happening to Firefox, but not Thunderbird and Evernote.

---

**Update**

I installed this app several months ago. And I mention that this happens after a restart. So I don't open the app from a DMG, which would be unmounted after a restart anyways.

Answer: 
* <https://bugs.documentfoundation.org/show_bug.cgi?id=126409>

It is a bug filed on LibreOffice's tracker. So they're aware of it. Please do not flood the tracker with "me too" comments.
It appears you do not have the app installed on your computer, and hence the app config is missing, causing macOS to ask you to verify with every restart.

You should consider installing it as mentioned in [@nohillside's answer](https://apple.stackexchange.com/a/391145/279727), by dragging to copy the LibreOffice.app into the `/Applications` directory.

[![enter image description here](https://i.stack.imgur.com/tVdkU.png)](https://i.stack.imgur.com/tVdkU.png)

Alternatively, you can also install the app using [Homebrew](https://brew.sh). If you already use Homebrew, you can simply run the following command-line in Terminal.app to install the app:

```
brew cask install libreoffice

```

If you do not have Homebrew installed, you can follow the installation instructions on Homebrew [website](https://brew.sh) to install it before running the above command.