Not able to authenticate using OAuth

[Samik R]

Hello group,

Things were great, until I suddenly realized that I am not able to add new events with Lightning to my Google calendar. I checked and the version of TB was 37 - so I decided to upgrade. Downloaded the brand new version 45.1.0, and the email worked as usual - no problem. But the problem still persisted with creating new events on GCal with Lightning. So I decided to unsubscribe and resubscribe the calendar.

Then I got stuck. When I choose GCal on the new Calendar setup wizard, and put in my email address, I get an empty screen in the windows where it says: "Please select the calendar and task lists you would like to subscribe to:".

There was nothing obvious on the error window, so as per instructions here [https://support.mozilla.org/en-US/kb/using-lightning-google-calendar], I switched on calendar log. Now I see a bunch of errors related to authentication, which are probably the same ones that caused the first issue to happen.

Tried following things:
- Manually removed "Provider for Google Calendar", cleaned the calendar-data folder in profile and reinstalled 2.7 (as mentioned in [https://groups.google.com/forum/#!topic/provider-for-google-calendar/kUivB_E8D1A])
- None of the plugins mentioned in "Known Issue: Blank wizard page in new calendar dialog (with workaround)" thread is installed.

Any pointers on what I should try, or anyone else facing the same error?

Regards,
-Samik

Anyways, here are the details:

System: Win 10 Home, x64,  v1511, Build 10586.318
TB: 45.0.1
Lightning: 4.7.1
Provider for Google Calendar: 2.7

Messages on error console:
[calGoogleSessionManager] Reusing session em...@gmail.com
[calGoogleSession] Token expired 1463892849 seconds ago, resetting
[calGoogleCalendar] Logging in session em...@gmail.com
[calGoogleCalendar] No access token for em...@gmail.com, refreshing token
[calGoogleSession] Adding item https://www.googleapis.com/tasks/v1/users/@me/lists to queue
[calGoogleSession] Adding item https://www.googleapis.com/calendar/v3/users/me/calendarList to queue
gContactSync: ***ERROR: Error during sync
Error Message:
Unable to sync contacts while offline.
Please report this error to gcontactsync at pirules.org (in English, if possible)
[calGoogleCalendar] Failed to acquire a new OAuth token for em...@gmail.com data: null
Timestamp: 22-May-16 10:24:29 AM
Error: [calGoogleSession] Authentication failure: null
Source File: resource://gdata-provider/modules/gdataSession.jsm
Line: 262
Timestamp: 22-May-16 10:24:29 AM
Error: [Exception... "null"  nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame :: resource://gdata-provider/modules/gdataSession.jsm :: calGoogleSession.prototype.login/authFailed< :: line 264"  data: no]
Source File: chrome://gdata-provider/content/gdata-calendar-creation.js
Line: 212

[Samik R]

Never mind - I had my system proxy set up from a past trip, which I forgot to take out. Oh well!!