Synching never stops, says updating for 5 days!

After weeks and weeks of back and forth I finally received the answer which did work:

Note in the answer below, if your DropBox folder is not in the default location, like on a second Data drive on your machine and not the OS drive, then you will need to modify the DOS commands below as %HOMEPATH% and %APPDATA% and %LOCALAPPDATA% refer to your default (C:\) Drive.

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1) If Dropbox is running:

- Click on the Dropbox icon in the system tray
- Click on your profile picture or initials and select "Quit"

2) Press the Windows Key + R then type "cmd" and press enter to open the Command prompt.

3) Copy and paste the following lines into the Command Prompt, one at a time, and press RETURN after each one. PLEASE make sure you copy and paste these commands(don't type them by hand), as getting them wrong could cause some harm. Also, you can only paste them by right clicking and selecting “Paste”. Don't worry if one of the instructions below fail or you can't find the folder in one of these locations. This is normal.

icacls "%HOMEPATH%\Dropbox" /grant "%USERNAME%":(F) /T

icacls "%APPDATA%\Dropbox" /grant "%USERNAME%":(F) /T

icacls "%LOCALAPPDATA%\Dropbox" /grant "%USERNAME%":(F) /T

NOTE: Please copy/paste the output of each command in a .txt file, in case further troubleshooting is needed. 

4) Restart Dropbox from Start -> All Programs. Please also restart your computer.