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can't launch dropbox

can't launch dropbox

Explorer | Level 3


Using Dropbox on Windows - no problems until today.

Back from a week away from the desk and could not launch Dropbox.

Error message:

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.


Error log:


bn.BUILD_KEY: Dropbox
bn.VERSION: 111.4.472
bn.is_frozen: True
machine_id: 31d8fa56-f656-43be-956c-5600ebfc4d12
pid: 1280
cwd: 'C:\\Program Files (x86)\\Dropbox\\Client'
real_path='C:\\Program Files (x86)\\Dropbox\\Client'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
HOME: None
appdata: 'C:\\Users\\frank\\AppData\\Local\\Dropbox\\instance1'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
dropbox_path: 'C:\\Users\\frank\\Dropbox (Personlig)'
real_path='C:\\Users\\frank\\Dropbox (Personlig)'
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\\111.4.472\\\\dropbox\\client\\ui\\common\\boot_error.pyc'
real_path='C:\\Program Files (x86)\\Dropbox\\Client\\111.4.472\\\\dropbox\\client\\ui\\common\\boot_error.pyc'
not found
parent not found
TMP: C:\Users\frank\AppData\Local\Temp
TEMP: C:\Users\frank\AppData\Local\Temp
tempdir: 'C:\\Users\\frank\\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 808, in wrapper
File "dropbox\client\main.pyc", line 6577, in finish_dropbox_boot
File "dropbox\client\main.pyc", line 6057, in _init_components_for_account
File "dropbox\client\main.pyc", line 5996, in create_sync_engine
File "dropbox\sync_engine_boundary\factory.pyc", line 261, in make_sync_engine
File "dropbox\sync_engine\nucleus\classic_client\sync_engine.pyc", line 337, in __init__
File "dropbox\sync_engine\nucleus\classic_client\modern_client\modern_client.pyc", line 163, in __init__
File "dropbox\sync_engine\nucleus\classic_client\modern_client\base.pyc", line 155, in __init__
File "dropbox\sync_engine\nucleus\classic_client\thin_adapter\in_proc.pyc", line 226, in __init__
File "dropbox\sync_engine\nucleus\classic_client\thin_adapter\in_proc.pyc", line 629, in _init_new_engine_locked
File "dropbox\sync_engine\nucleus\thin_client\client.pyc", line 218, in __init__
File "extensions\nucleus\nucleus_python.pyx", line 88, in nucleus_python.NucleusSyncEngine.__cinit__
nucleus_python.SyncEngineError: "Initializing engine |>> Initializing filesystem |>> NtCreateFile syscall: open_unchecked |>> Permission denied"


Have restarted both Dropbox and Windows to no avail.

Cannot access my files nor save to folders.


What to do?



1 Reply 1

Re: can't launch dropbox


Hey @Ahoskie; welcome to our Community!


Could you please temporarily disable any antivirus you might have running on your computer and try to re-install our app from this link?


 If you get the same results, you may need to perform a clean, advanced re-install.


Let me know how it goes!

Community Moderator @ Dropbox

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