Can't start Dropbox

cliccando sulla stringa in blu mi compare questo:

bn.BUILD_KEY: Dropbox
bn.VERSION: 143.4.4161
bn.constants.WINDOWS_SHELL_EXT_VERSION: 52
bn.is_frozen: True
machine_id: dabd3e21-4a30-419f-a221-31953c1de4d6
pid: 12496
cwd: 'C:\\Program Files (x86)\\Dropbox\\Update\\1.3.583.1'
real_path='C:\\Program Files (x86)\\Dropbox\\Update\\1.3.583.1'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
HOME: None
appdata: 'C:\\Users\\adyfa\\AppData\\Local\\Dropbox\\instance1'
real_path='C:\\Users\\adyfa\\AppData\\Local\\Dropbox\\instance1'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
dropbox_path: 'C:\\Users\\adyfa\\Dropbox'
real_path='C:\\Users\\adyfa\\Dropbox'
mode=0o40555 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\\143.4.4161\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
real_path='C:\\Program Files (x86)\\Dropbox\\Client\\143.4.4161\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
not found
parent not found
TMP: C:\Users\adyfa\AppData\Local\Temp
TEMP: C:\Users\adyfa\AppData\Local\Temp
tempdir: 'C:\\Users\\adyfa\\AppData\\Local\\Temp'
real_path='C:\\Users\\adyfa\\AppData\\Local\\Temp'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
Traceback (most recent call last):
File "dropbox\client\main.pyc", line 832, in wrapper
File "dropbox\client\main.pyc", line 6666, in finish_dropbox_boot
File "dropbox\client\message_queue.pyc", line 313, in _wrapped
File "dropbox\client\main.pyc", line 6200, in _init_components_for_account
File "dropbox\client\main.pyc", line 6124, in create_sync_engine
File "dropbox\sync_engine_boundary\factory.pyc", line 218, in make_sync_engine
File "dropbox\sync_engine\nucleus\classic_client\sync_engine.pyc", line 262, in __init__
File "dropbox\sync_engine\nucleus\classic_client\modern_client\modern_client.pyc", line 258, in __init__
File "dropbox\sync_engine\nucleus\classic_client\modern_client\base.pyc", line 191, in __init__
File "dropbox\sync_engine\nucleus\classic_client\thin_adapter\in_proc.pyc", line 216, in __init__
File "dropbox\sync_engine\nucleus\classic_client\thin_adapter\in_proc.pyc", line 528, in _init_new_engine_locked
File "dropbox\sync_engine\nucleus\thin_client\client.pyc", line 134, in __init__
File "desktop\extensions\nucleus\nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> Marking Nucleus cache directory as ignored |>> Opening xattr |>> Opening ADS |>> ACCESS_DENIED |>> Permission denied"