Couldn't Start Dropbox - macOS Monterey

[amiralin]

After installing the new macOS Monterey I am getting the below error 

Couldn't start Dropbox

This is usually because of a permissions error. Storing your home folder on a network share can also cause an error. For more information, click the help button below.

I tried to remove dropbox using instructions on the website and re-install using advance install and still see the error. 

bn.BUILD_KEY: Dropbox

bn.VERSION: 133.4.4089

bn.constants.WINDOWS_SHELL_EXT_VERSION: 51

bn.is_frozen: True

machine_id: 523bf589-eb29-56d6-9beb-1631aa56ce2b

pid: 1077

ppid: 1

uid: 501

user_info: pwd.struct_passwd(pw_name='amirnathoo', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Amirali Nathoo', pw_dir='/Users/amirnathoo', pw_shell='/bin/zsh')

effective_user_info: pwd.struct_passwd(pw_name='amirnathoo', pw_passwd='********', pw_uid=501, pw_gid=20, pw_gecos='Amirali Nathoo', pw_dir='/Users/amirnathoo', pw_shell='/bin/zsh')

euid: 501

gid: 20

egid: 20

group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root'])

effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root'])

DYLD_LIBRARY_PATH: None

cwd: '/'

     real_path='/'

            mode=0o40755 uid=0 gid=0

     parent mode=0o40755 uid=0 gid=0

HOME: '/Users/amirnathoo'

appdata: '/Users/amirnathoo/.dropbox/instance1'

         real_path='/Users/amirnathoo/.dropbox/instance1'

                mode=0o40700 uid=501 gid=20

         parent mode=0o40755 uid=501 gid=20

dropbox_path: '/Users/amirnathoo/Dropbox'

              real_path='/Users/amirnathoo/Dropbox'

                    mode=0o40700 uid=501 gid=20

              parent mode=0o40755 uid=501 gid=20

sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                      mode=0o100755 uid=501 gid=20

                parent mode=0o40755 uid=501 gid=20

trace.__file__: '/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'

                real_path='/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'

                      not found

                parent not found

tempdir: '/var/folders/xq/rpxg71x17dj4ylbw_svqhdjc0000gn/T'

         real_path='/private/var/folders/xq/rpxg71x17dj4ylbw_svqhdjc0000gn/T'

                mode=0o40700 uid=501 gid=20

         parent mode=0o40755 uid=501 gid=20

Traceback (most recent call last):

  File "dropbox/client/main.pyc", line 808, in wrapper

  File "dropbox/client/main.pyc", line 6497, in finish_dropbox_boot

  File "dropbox/client/message_queue.pyc", line 307, in _wrapped

  File "dropbox/client/main.pyc", line 6030, in _init_components_for_account

  File "dropbox/client/main.pyc", line 5954, in create_sync_engine

  File "dropbox/sync_engine_boundary/factory.pyc", line 226, in make_sync_engine

  File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 280, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 222, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 152, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 217, in __init__

  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 587, in _init_new_engine_locked

  File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 185, in __init__

  File "desktop/extensions/nucleus/nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__

nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Attempting to register icons |>> fchflags syscall: _set_hidden |>> Permission denied"

please assist

[Hannah]

Oh, Tom, I thought you had already tried those steps (from the hyperlinked article in my previous response in this thread) and they didn't help.

So happy they worked for you, though, and big a thanks to @amiralin!

If you need anything else, make sure to give us a shout!

[Gerard2021]

Thank you, I followed those steps (took a few minutes to figure them out) and it also resolved the problem. 

[victora1948]

So did I. Seems to be working o.k. by now.

However in my case 

• Accessibility – unlock and select Dropbox app ----> This one I could not select;
• Full Disk Access unlock and select Dropbox app ---> This one I could select.

[juanpalema]

It worked! Thank you so much

[thiagojcsoares]

Hi there,

I have just updated to macOS Monterey and Dropbox won't start. Anyone else with the same issue?

Thanks

[Hannah]

Hey @thiagojcsoares, thanks for posting on our Community!

Are you getting any error messages, like a 'couldn't start Dropbox' pop-up?

If so, can you please copy the error log from the .txt file on the error message in your next reply, so I can check it out?

Thanks!

[chzeo]

I'm having the same problem.  Error message simply states "Dropbox unexpectedly quit".

[Pocile]

THANK YOU VERY MUCH. IT WORKED FOR ME TOO

[thiagojcsoares]

I was able so solve it by performing an advanced-reinstall. For it to work properly, I had to rename my remaining dropbox folder after uninstalling the app (I did it between steps 2.2 and 3). Once the installation was complete, a new folder was created and synched. I then deleted the old renamed folder. 

[Jtu3]

I received a new M1 MacBook Air yesterday. After I transferred my data from my 6-year old Intel MacBook, I was prompted to upgrade my new MacBook Air to Monterey. After the upgrade, it's running Monterey 12.01. During the installation I got a message that the Dropbox app wasn't supported, and indeed it was evidently automatically removed from the Applications folder. The Dropbox app was totally up to date before the transfer. What the heck happened?