UpdraftPlus Dropbox authentication fails every time

Resolved kcren
(@kcren)

5 years, 9 months ago
One of my sites is unable to authenticate Dropbox for UpdraftPlus backups.

What I do:
I add Dropbox and Save, then click the link to authenticate, I choose the correct Dropbox account (work, not personal), then click the UpdraftPlus orange page button to “Complete setup”.

What I see:
I never return to the Dropbox page in WordPress when I click “Complete setup.”
Instead, I am thrown out to the wp-admin login screen and must re-login.
UpdraftPlus Dropbox authentication works with no trouble on two other websites I own.
Both of those send backups to Dropbox successfully.

What I’ve tried without success:
I wiped the updraftPlus setting and set them up again manually.
I disabled every other plugin. Only UpdraftPlus plugin is active.
I tried to authenticate to my Personal Dropbox account instead.
Always same behavior.

What I noticed:
Used Link Redirect trace in Chrome to see how I got to the login page.
The button on the final UpdraftPlus orange authentication page is taking me to http://letskeepitcivil.org/wp-admin/options-general.php?page=updraftplus&action=updraftmethod-dropbox-auth
But this is being 302 redirected to:
http://www.letskeepitcivil.org/wp-login.php?redirect_to=http%3A%2F%2Fletskeepitcivil.org%2Fwp-admin%2Foptions-general.php%3Fpage%3Dupdraftplus%26action%3Dupdraftmethod-dropbox-auth&reauth=1

Every time. I have no idea why.
No other plugins are active on that site.
And the other two sites do NOT redirect like that. They just show a 200 status on the “Complete Setup” link itself:
http://priacta.com/wp-admin/options-general.php?page=updraftplus&action=updraftmethod-dropbox-auth

Any help would be appreciated.
- This topic was modified 5 years, 9 months ago by kcren.
- This topic was modified 5 years, 9 months ago by kcren.

Viewing 5 replies - 1 through 5 (of 5 total)

Plugin Contributor bcrodua
(@bcrodua)

5 years, 9 months ago

Hi,

Please could you check with your host/server admin if there are no firewall blocking the connection?

Regards,
Bryle

Thread Starter kcren
(@kcren)

5 years, 9 months ago

Self-hosted on Digital Ocean. We temporarily disabled all WordPress-side firewalls and got the same results. Nothing in .htaccess file. The other two sites that authenticate Dropbox are hosted the same way with Wordfence firewalls.

This site USED to have a Sucuri WP firewall, which has since been deactivated but not uninstalled.

BUT how would a firewall explain the redirect we are seeing? Where is that redirect coming from? It has to be defined somewhere…

UFW (Ubuntu) is likely active, will investigate. What IP addresses need to be whitelisted?
Thread Starter kcren
(@kcren)

5 years, 9 months ago
Update: iptables -L returns an empty list.
Nothing is being blocked.

The redirect still happens, and I’m unable to authenticate Dropbox on this site, even with all other plugins disabled, even wiping UpdraftPlus settings and starting over.
- This reply was modified 5 years, 9 months ago by kcren.
Plugin Contributor DNutbourne
(@dnutbourne)

5 years, 9 months ago

Hi,

Apologies for the delay.

The redirection is the most likely cause of the issue.

What URL is the correct one for accessing the site (i.e. with or without ‘www.’)?
Thread Starter kcren
(@kcren)

5 years, 9 months ago
That was it. The developer left two defines in the wp_config.php file for WP_HOME and WP_SITEURL. The symptom was that the site url was not editable in WordPress, those options were grayed out. I deleted those defines and reloaded the page, and Dropbox immediately authenticated.

Thank you for helping us resolve this!
- This reply was modified 5 years, 9 months ago by kcren.

Viewing 5 replies - 1 through 5 (of 5 total)

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