The Dropbox app closes unexpectedly (service continues to run) while running on Server 2012 R2.  When the app closes syncing stops and users start complaining.  So I wrote the following script and scheduled it to run every 30 minutes.

FYI… although it installs, Dropbox is not officially supported on Server systems.

https://www.dropbox.com/en/help/3

Script checks to see if the Dropbox process is running, if it is, it simply quits after displaying a message, if it’s not, then it tries starting the Dropbox process and sends an email out if the process gets started successfully.

$Dropbox = Get-Process "Dropbox" -ea SilentlyContinue
if ($Dropbox) {
echo "Dropbox is running!!!"
}
Else {
Start-Process -FilePath "C:\Program Files (x86)\Dropbox\Client\Dropbox.exe"
$Dropbox = Get-Process "Dropbox" -ea SilentlyContinue
if ($Dropbox) {
echo "Dropbox has been started!!!"
Send-MailMessage -to "administrator@domain" -from "email@domain" -subject "Dropbox has been started!!!" -body "The Dropbox process on server SERVER NAME (SERVER IP) wasn't running, a
script has started the Dropbox process." -SmtpServer EMAIL SERVER IP -Port EMAIL SERVER PORT
}
}