I did an advanced reinstall of my Dropbox app, but now it won't start (Windows 11).

 

Hi,

I'm running a fully-updated Win 11 and had the latest Dropbox desktop app. As I'm in China I run Astrill VPN and have both Kaspersky and Malwarebytes apps for security.

Dropbox wouldn't load so, after disabling all services and restarting several times, I uninstalled and reinstalled according to this:

https://help.dropbox.com/installs/advanced-reinstall

After reinstall, I get error window 'Couldn't start Dropbox' and link to following info:

Dropbox error84 9v00.txt:

 

bn.BUILD_KEY: Dropbox
bn.VERSION: 229.4.5197
bn.constants.WINDOWS_SHELL_EXT_VERSION: 83
bn.is_frozen: True
machine_id: def3829b-d51a-42b8-88bc-a30fd4b6e19e
pid: 28288
cwd: 'C:\\WINDOWS\\system32'
     real_path='C:\\Windows\\SysWOW64'
               mode=0o40777    uid=0    gid=0
     parent    mode=0o40777    uid=0    gid=0
HOME: None
appdata: 'C:\\Users\\caram\\AppData\\Local\\Dropbox\\instance1'
         real_path='C:\\Users\\caram\\AppData\\Local\\Dropbox\\instance1'
                   mode=0o40777    uid=0    gid=0
         parent    mode=0o40777    uid=0    gid=0
dropbox_path: 'H:\\Dropbox'
              real_path='H:\\Dropbox'
                        mode=0o40777    uid=0    gid=0
              parent    mode=0o40777    uid=0    gid=0
sys_executable: 'C:\\Program Files (x86)\\Dropbox\\Client\\Dropbox.exe'
                real_path='C:\\Program Files (x86)\\Dropbox\\Client\\Dropbox.exe'
                          mode=0o100777    uid=0    gid=0
                parent    mode=0o40777    uid=0    gid=0
trace.__file__: 'C:\\Program Files (x86)\\Dropbox\\Client\\229.4.5197\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
                real_path='C:\\Program Files (x86)\\Dropbox\\Client\\229.4.5197\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
                          not found
                parent    not found
TMP: C:\Users\caram\AppData\Local\Temp
TEMP: C:\Users\caram\AppData\Local\Temp
tempdir: 'C:\\Users\\caram\\AppData\\Local\\Temp'
         real_path='C:\\Users\\caram\\AppData\\Local\\Temp'
                   mode=0o40777    uid=0    gid=0
         parent    mode=0o40777    uid=0    gid=0
Traceback (most recent call last):
  File "desktop/dropbox/client/main.py", line 1108, in wrapper
  File "desktop/dropbox/client/main.py", line 8671, in finish_dropbox_boot
  File "desktop/dropbox/client/message_queue.py", line 337, in _wrapped
  File "desktop/dropbox/client/main.py", line 7955, in _init_components_for_account
  File "desktop/dropbox/client/main.py", line 7863, in create_sync_engine
  File "desktop/dropbox/sync_engine_boundary/factory.py", line 237, in make_sync_engine
  File "desktop/dropbox/sync_engine/nucleus/classic_client/sync_engine.py", line 268, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.py", line 316, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/modern_client/base.py", line 279, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.py", line 243, in __init__
  File "desktop/dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.py", line 615, in _init_new_engine_locked
  File "desktop/dropbox/sync_engine/nucleus/thin_client/client.py", line 166, in __init__
  File "desktop\extensions\nucleus\nucleus_python.pyx", line 77, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Failed to write root dot dropbox file |>> Deleting .dropbox before writing a new one |>> Opening with change_acl |>> openat_native |>> ACCESS_DENIED |>> FSErrorCode::PermissionDenied"

What to do?