[BUG] This app is blocked

[paour]

Expected behaviour

When I trigger a backup, it should complete without error.

Actual behaviour

SMS Backup+ reports the following error: XOAuth authorization error. Please make sure you enabled IMAP in your Gmail account settings..

Play Services on my device displays a notification with the following alert:

Reproduce by

No response

Android version

11 (2020)

Phone brand

OnePlus

Phone model number

8T

SMS Backup+ version

v1.6β

Messaging app

No response

Other details

No response

[paour]

This looks like the end of the road. Even side-loaded, the app is blocked server-side by Google…

[pataquets]

@paour #1102 stopped working?

[paour]

@paour #1102 stopped working?

Yes. I've been using app passwords forever because 2FA. I generated a new one when this cropped up, to no avail.

[marclaporte]

Workaround: use a standard IMAP account (strong password always): https://github.com/jberkel/sms-backup-plus#usage-without-gmail-imap

[kurahaupo]

"This app is blocked" occurs when an app uses a Google API.

The reason that using IMAP works is that although it's provided by Google, it's not defined by Google.

The IMAP protocol does not transmit any identification of the app, so the server cannot know which app is using the IMAP connection, and can't use that to decide to block it.

So the question is, which Google API is being refused?

(My money would be on the contacts list API; I would test that by changing the default message format to include just the phone number and exclude the person's name.)

[BenJewell]

Still works fine for me using IMAP. Was getting a lot of errors a couple weeks ago but seems to have resolved itself.

[kurahaupo]

Appears to be a duplicate of #1046