Making sure Dropbox is allowed through the firewall Checking Your storage plan in Dropbox account settings You can fix your storage quota issue by removing some of your synced files or by upgrading to Dropbox plus or professional.Make sure Dropbox is allowed through your firewall.Make sure no proxy, VPN is running in the background.You should make sure your date and time settings are correct.

These tips will help if you are having issues connected to the internet or you don’t have storage left. Solution 1: Configuration of Settings and Upgrading Your accountīefore we start configuring files and settings, you can perform the basic troubleshooting techniques. Proxy settings: If you are using a proxy or VPN while syncing it might also cause the problem because Dropbox will recognize that as a security violation.Firewall Issues: If the Dropbox app or its update is not allowed through the firewall then also it can cause issues because it might have problems connecting with the internet.Identical Names: If two files have identical names then the dropbox will not sync it because it causes errors in recognition of the files.Other Syncing Apps: Also, it is to be noted that no other syncing apps are interfacing with the Dropbox for it to work properly.File in Use: Dropbox works best if only one instance of the app is running on the same computer.Sync Error with a Red Dot: This issue is caused by several misconfigurations in settings along with several bugs which conflict with it.While I could use another free epub app to read it, I would very much like to keep the extensive notes I've taken (which are still visible in the MacOS ibooks app!) and read it on my phone and not my laptop. This is not some sketchy epub, I bought it legally, though not from the ibook store, AND it previously was in the iOS app and was working fine. My MacOS iBooks app is signed into the same apple ID as my iPhone is signed into under App store both the 'iCloud' and 'iTunes & App Store', if that helps. I tried opening the offending epub in /another/ epub reader reader app, also via 'open in' from dropbox, and that works fine too. I tried opening other epubs with iBooks– that works fine. I can put the epub on dropbox and open at on iOS via the 'open in' thing, and I can select iBooks, but this merely switches to the iBooks app but the book does not appear. It is still in the MacOS iBooks app on my rMBP. Not sure when it happened, but when I went to continue reading, it was simply gone. epub disappeared from the ibooks app on my iphone SE.

Dropbox app wont open