Google Drive does not detect internet connection Yesterday I have updated Google Drive and installed Sheets. Since that time I am unable to open the spreadsheets I have created earlier.   

When I try to open a sheet, I get Unable to access document. Please make sure that you are connected to the internet. I am obviously connected, Firefox works, I can even open documents, just not sheets.

If I try to set offline access to these sheets, they keep downloading, just like when I have no internet connection.

Anyone else has this problem, or even better, a solution? I have tried clearing the cache of Drive an Sheets, did not help.
I have a rooted Nexus 4 with 4.4.2
Used to have the same problem.
In my case, google drive was trying to open the document using Sheets app, but the Sheets app was allowed to access documents only via WiFi connection. Go to Sheets/Setings and uncheck "Transfer files only over Wi-Fi" checkbox. Be aware, that similar "Transfer files only over Wi-Fi" checkbox is also in Drive app, but this affects only Drive app, not the Sheets app.