Dropbox

1. Information

Note: Double-clicking on the installation file when logged on as a user and providing administrative privileges when prompted, will result in the program being installed for the user and not for the Administrator.
Note: Right-clicking on the installation file when logged on as a user and selecting "Run as administrator", will result in the program being installed for the Administrator and not for the user.

Dropbox is no longer offering the option for creating new long-lived access tokens. Dropbox is now issuing short-lived access tokens (and optional refresh tokens) instead of long-lived access tokens. You can find more information on this migration here. This applies whether the app is in development or production status.

Apps can still get long-term access by requesting "offline" access though, in which case the app receives a "refresh token" that can be used to retrieve new short-lived access tokens as needed, without further manual user intervention. You can find more information in the OAuth Guide and authorization documentation. There’s a basic outline of processing this flow in this blog post which may serve as a useful example.

2. Linux

3. Windows

3.1. Installaton

Note: Do not install Dropbox with administrative privileges.
Note: The Welcome to Dropbox window will pop up for any user (including Administrator) logging on to Windows.

3.2. Administrator

Open Task Manager.
Select the Startup tab.
Disable Dropbox.
Quit Task Manager.

Open File Explorer.
Select the C:\Users\<User>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup folder.
Copy Dropbox from the Start menu and paste it in the Startup folder.
Quit File Explorer.

3.3. STandard User

Logon as Standard User.
Double-click the DropboxInstaller.exe file.
Click No at the User Account Control popup window.
Click Yes to continue installing Dropbox without administrator privileges.
Wait for Dropbox to be downloaded and installed.
Existing Account: Click Sign in with Dropbox.
New Account: Select create an account on dropbox.com.
Postpone: Close the Welcome to Dropbox! window and click Later.

3.4. Configuration

3.4.1. Move Dropbox folder from C drive to D drive

Create a folder in a D: drive like D:\<User> or D:\<the folder name you prefer>.

Start Dropbox as <User>.
Click Dropbox icon on notification area.
Click Access and manage your Dropbox settings and select Preferences.
Select Sync tab.
Click Move button.
Select <User> folder in drive D:.
Click OK.
Click OK.
Wait till files moving is finished.
Click Apply.
Click OK.