Hello, As far as I know, Google’s CardDAV service is a bit problematic. What is the CardDAV URL according to their documentation?

Synchronization with Google CalDAV/CardDAV is not officially supported by Google or DAVx⁵. For some people it seems to work, for others it doesn’t. Google officially requires OAuth 2, which is not supported by DAVx⁵. We have received updated information about Google CalDAV: The old endpoint https://www.google.com/calendar/dav is deprecated and no longer supported. Now you shout suggest https://apidata.googleusercontent.com/caldav/v2/calid/events Please have a look on https://developers.google.com/calendar/caldav/v2/guide Google Account security: If you use 2-Step-Verification for your Google account (recommended): Create an app password for DAVx⁵ and use the app password for signing in with DAVx⁵. If you’re not using 2-Step-Verification: To allow Basic auth clients like DAVx⁵ to connect, you need to “Allow less secure apps” in your Google account before setting up DAVx⁵. If you have further information, please just post here.

A few weeks ago, Google detected “unusual activity” when I logged into my email from home on a new computer. I was asked to verify my account via a code sent to me via SMS. This resulted in DAVx5 throwing errors and no longer syncing - on a different device. It looked like the Google servers had deemed my home IP address as untrustworthy. My DAVx5 connection string is: https://www.google.com/calendar/dav/address@gmail.com/events/. So I tried entering that as an address into my browser. A login prompt appeared so I logged in with my email address and password. The attempt failed. Hmm, is the service no longer running? Then I tried with another account that I had. It worked. Damn, my account is definitely blocked here. For two weeks I logged into my email from the same IP address. Every time Google required verification via SMS. Boring. During this time DAVx5 was constantly failing. Then today it let me in without verification. At last, my IP address was trusted as far as my Google account was concerned. And guess what, DAVx5 started working again. Hooray! So for those of you out there who cannot get DAVx5 to work with your account - or it suddenly stops working - you just have to wait and persevere by logging in daily until the Google servers associate your IP address and your email account together so that other services can log in from there without being blocked. Hope this helps someone.

Ok my mistake I found the URL listed online, I don’t have that URL off the top of my head… SORRY I’ll go back and redo it with only that davx URL… My bad… THANKS

Thanks for the logs. I was finally able to reproduce a similar situation: Upload an event with UID:a%40b (note the %, for instance coming from some erroneously double-encoded old UID; nevertheless valid) to Google /events/a%40b.ics (or anything else) Google usually rewrites the path (= moves the event) to <UID>.ics, which would be a%40b.ics. However, Google CalDAV REPORT calendar-query reports /events/a%2540b.ics as the URL of the resource. If you want to download /events/a%2540b.ics from Google, it returns 404, although it had just listed this path. So, in my opinion and what I currently know about it, this seems to be a server problem. It should go away if you delete all events on the server and then only create/sync “clean” events with “good UIDs”. Maybe you can also create a new calendar for testing and see whether this one works?

@devvv4ever , yes, I had to infer the calid (which is a long hex number) from the web UI. But it didn’t work.

@Carlin what would that key part be?

To subscribe to the other calendars in my Google Calendar I used the ICSx companion app for DAVx. All public calendars use the ICS format, including the Google-supplied ones like their holiday calendars. According to the official documentation, DAVx should automatically detect the public ICS calendars integrated with a CalDav calendar and sync them to the ICSx app. That didn’t work for me with my Google calendar so I manually added them to the ICSx app using the URL listed for each of my public calendars at the top of their settings pages. The Google supplied calendars have the iCal url at the bottom of the settings page.

See also: https://davdroid.bitfire.at/configuration/google/

The current Google API / OAuth method is not supported by DAVdroid but it’s still possible by using the old format as mentioned by @daniu : https://www.google.com/calendar/dav/[yourname]@gmail.com/events username password Yet it requires the compromise Allow less secure apps: ON in the Google security settings. However, delegates don’t sync. Tested on OnePlus 3t, Android 7.1.1, DAVdroid 1.10.1.1.

@rfc2822 I suppose #234 was githab issue, but now I see there are no issues on GitLab exist. Where should I follow this topic now?

See also: https://davdroid.bitfire.at/configuration/google/