Couldn't Start Dropbox

[Letome1]

The first time this came out, I simply decided to uninstall and reinstall dropbox again. However, the installation can not be completed as the Couldn't Start Dropbox error appears near the installation end. I already tried administrator mode and it did not work as well.

bn.BUILD_KEY: Dropbox
bn.VERSION: 44.4.58
bn.DROPBOXEXT_VERSION: 19.0
bn.is_frozen: True
machine_id: failed
pid: 10692
cwd: u'C:\\Program Files (x86)\\Dropbox\\Client'
real_path=u'C:\\Program Files (x86)\\Dropbox\\Client'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
HOME: None
appdata: u'C:\\Users\\leoya\\AppData\\Local\\Dropbox'
real_path=u'C:\\Users\\leoya\\AppData\\Local\\Dropbox'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
dropbox_path: None
real_path='C:\\Program Files (x86)\\Dropbox\\Client'
not found
parent not found
sys_executable: 'C:\\Program Files (x86)\\Dropbox\\Client_44.4.58\\Dropbox.exe'
real_path='C:\\Program Files (x86)\\Dropbox\\Client_44.4.58\\Dropbox.exe'
mode=0100777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
trace.__file__: 'C:\\Program Files (x86)\\Dropbox\\Client_44.4.58\\python-packages-27.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
real_path='C:\\Program Files (x86)\\Dropbox\\Client_44.4.58\\python-packages-27.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
not found
parent not found
TMP: C:\Users\leoya\AppData\Local\Temp
TEMP: C:\Users\leoya\AppData\Local\Temp
tempdir: u'c:\\users\\leoya\\appdata\\local\\temp'
real_path=u'c:\\users\\leoya\\appdata\\local\\temp'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
[get_extra_trace_info failed]
Traceback (most recent call last):
File "dropbox\client\main.pyc", line 1018, in boot_error
AssertionError

Original traceback:

Traceback (most recent call last):
File "dropbox\client\main.pyc", line 6364, in main_startup
File "dropbox\client\main.pyc", line 2456, in run
File "dropbox\client\main.pyc", line 1380, in startup_low
File "dropbox\client\multiaccount\instance_database.pyc", line 757, in __init__
File "dropbox\client\mapreduce.pyc", line 79, in __init__
File "dropbox\client\mapreduce.pyc", line 127, in new_user_key
File "dropbox\keystore\keystore_win32.pyc", line 85, in store_versioned_key
File "dropbox\keystore\keystore_win32.pyc", line 93, in _store_versioned_key
File "dropbox\keystore\keystore_win32.pyc", line 199, in _encrypt_payload
File "pynt\helpers\crypt.pyc", line 30, in protect_data
FormattedWindowsError: [Error 5] Access is denied.

[Chris_J]

Hello Letome1,

I am sorry that you are having issues.  Can you check out this article to see if anything applies to you?  https://www.dropbox.com/help/syncing-uploads/stuck-syncing

Pay attention to the mid part where you can check permissions.

Hopes this helps and let us know how it went

[cpavloud]

I also could not start Dropbox today. 

I am at my office and everyday I start Dropbox (Windows 7 machine). I don't have the automatically open when computer starts option. 

Today I could not find the programme! It is not in my Program Files also!

But it exists in the Control Panel and it seems that software was installed yesterday!!

Please let me know how I can solve this!!!!!!!!!

[Chris_J]

Hello cpavloud 

It sounds like you have an anti-virus running that is blocking Dropbox and even perhaps deleting the client.  Might try reinstalling it and perhaps check your antivirus software to see if its the culprit.  Also, check the article I linked to in the post above yours.

Hopes this helps.  And let us know how it went

[cpavloud]

I only have Microsoft Security Essentials as an antivirus and it doesn't seem to block anything. 

I checked the article you had linked to the post above. 

Since there was no Dropbox option under Program Files, I started Dropbox by entering %APPDATA%\Dropbox into the Windows Explorer window and double clicking Dropbox.exe

At the moment, it seems ok. 

[Chris_J]

okay, thanks for replying back.  If you come across any more issues, feel free to post here

[Jay]

Hi there, this specific error is related with the level of access to the Windows Registry.

This means that Dropbox is attempting to access vital account information using your Windows Registry, but is being denied permission.

Try using the steps of the following Help center article in order to fix the issue:

https://www.dropbox.com/help/271

Let us know how it goes!