macOS Monterey 12 - Couldnt Start Dropbox

I posted the same error message to the most recent post " Dropbox won't start after macOS Monterey update"

StellarCore47

DropboxInstaller.dmg doesn't even work on Monterey, it won't launch.

I've tried BatchMod, CodeSigner, DeQuarantine, and the usual sudo Terminal commands on it and still nothing, it won't launch even right clicking etc.

There's a real issue of Dropbox (not) running under Monterey environment.

Do you try this?

"This is a step by step sequences....!
1) by Activity Monitor (you find it in Launchpad-Others-Activity Monitor) search and select all Dropbox items (especially Dropbox Finder Extension) and stop by the :cross_mark_button: or X bottom on the top of the app;
2) by Force Quit (in the System Menu Screenshot 2021-10-29 at 09.50.19.png) refresh or relaunch Finder;
3) in System Preference-Security and Privacy-Full Disk Access (after clicking lock to make change in the bottom left corner), enable Dropbox.App.
4) I think is better to restart computer after that."

Bye.
Andrea B

andreabonato 

1. Since the installer won't start, your method doesn't solve the issue on my end

2. Even after managing to install Dropbox through another installer, I've tried this many times, even (-) and then (+) Dropbox again, and restart of course, but this is not having any impact nor solving the issue on my end: Dropbox won't start again after each restart of the computer

yes, on the emails you get there's a Click here to unsubscribe link on the email footer, as with any mailing system 🙂

Hi everyone, with the macOS Monterey update (macOS 12.0 and above), some stricter permissions have been enforced by Apple which have probably led to the issue you are experiencing.
 

The following steps should help to resolve this behavior:

1. Click on the Apple icon in the top left hand corner of your screen
2. Select "System Preferences..."
3. Then "Security & Privacy"
4. Select the Privacy tab
5. Select "Full Disk Access"
6. Under Dropbox, ensure that all the folders are checked. (To make changes, you will need to click on the lock icon, and enter your macOS password)
7. Repeat these steps under 'Files and Folders' and 'Accessibility'
8. Once you've completed this, please attempt to restart the Dropbox desktop app

If need be, a reboot of the Mac itself would also help. 

Please, Jay and @Megan, read our posts. The solution you keep proposing does not work!

Jay please stop repeating like a bot, we told you it's NOT working.

And btw even the Dropbox installer is not opening under Monterey, please re-read above I'm tired of repeating ourselves.

If the previous steps didn't resolve the issue, you can try the following.

1) Stop the Dropbox desktop application (if needed)

• Click on the Dropbox icon.
• Choose Quit/Stop/Exit

2) Open your Terminal app (Located at /Applications/Utilities/Terminal)

3) Copy and paste the following lines into the Terminal, one at a time, and press RETURN after each one. PLEASE make sure you copy and paste these commands (don't type them by hand), as getting them wrong could cause some harm. You'll be prompted for your computer user's password (not your Dropbox password) after entering the first command. Keep in mind that the password field in the terminal will remain blank as you type your password. After you type it, just press ENTER. You'll know that these instructions complete normally once the initial line of text (called prompt) comes up again:

sudo chflags -R nouchg ~/Dropbox ~/.dropbox

sudo chown "$USER" "$HOME"

sudo chown -R "$USER" ~/Dropbox ~/.dropbox

sudo chmod -RN ~/.dropbox ~/Dropbox

chmod -R u+rw ~/Dropbox ~/.dropbox

Please note that once the prompt displays, the instruction completed the requested task, and is ready for the next command. If the command returns an error, or does not respond after an hour, you may want to try restarting your computer and try these steps again.

If you see an error after running one of these commands, let us know.

4) Restart Dropbox from Applications

Keep us updated on any progress.

DISCLAIMER: Please be advised that these steps include using the Terminal application. You should only try this if you are comfortable using Terminal, as incorrect usage can result in unwanted consequences. If you are not familiar with Terminal or run into any issues or errors, please let us know and we’ll take your case to ticket to troubleshoot directly.