On trying to login to web interface, https: //www.dropbox.com/login , on clicking sign in (having entered id and right or wrong password) I just get thrown back to the sign in page - this happens on Firefox, Edge and (newly installed) Chromium browsers, all on the same Windows machine. Other Windows PCs no issue. Sometimes I see a box pop up in the process saying 'Forbidden'; I have also seen reference to a 401 error and 'invalid csrf token'; and 'Error: Incorrect contents fetched, please reload'
I have removed (uninstalled) the dropbox app; and cleared cookies and site data, without it making any difference.
Thanks. There's no sign of any firewall or antivirus (I use Bitdefender Free) issue (no log seen) (I've added dropbox.com as an exclusion, without joy). I've actually found and installed another browser (Vivaldi), which doesn't have the same problem
On trying to login I go to https://www.dropbox.com/login
and having entered id and password I get flung back there, or to https://www.dropbox.com/?landing=dbv2
Note - I have the same issue on trying to access the community
I am experiencing similar issues with dropbox.com. Specifically, while I can successfully login to Dropbox.com, when I attempt to navigate to the Admin Console page, I enter (what appears to be) a redirect loop. I have tried this on macOS 11.5.1, Windows 10 21H1, using Brave, Safari, Edge, and Firefox. Also, I have tried this while tethering Wi-Fi from a smart-phone (to bypass any local firewall rules). Also, I have attempted this on a host (VM) that does not have any anti-virus software installed, and without any browser extensions installed. I have cleared browser cache, DNS cache (flushed DNS), rebooted; and I have tried private/incognito mode as well. In all cases, the result is the same: the Admin Console page does not load.
I saw this on Twitter; but the proposed solution (disable anti-virus) does not apply to the scenario I have encountered:
I had been having issues also login into the web interface for the last week. I tried multiple computers, disabling all plugins on Firefox and Google Chrome, and Edge. I tried this at work and at home and with multiple Dropbox accounts.
Finally after seeing the advice about antivirus on here. I turned off my Bitdefender free protection and it worked after that.
Some update recently with Bitdefender is blocking the login to dropbox.
Once I'm login Bitdefender can be turned back on.
@Walter - I've tried both (clearing browser cache and private window) without joy.
Problem does seem to be related to Bitdefender Free, that I use.
Something I've noticed is that it appears that if I am logged in, I can do things without problem - until I log out. It is only trying to login that I cannot get beyond the login screen.
I've added "dropbox.com" to the Bitdefender Free exclusion list: doesn't resolve the matter.
Something I saw suggested that the 401 error and 'invalid csrf token' were indicative of a security certificate mismatch issue?
And looking on Bitdefender community support, I found https://community.bitdefender.com/en/discussion/88545/bitdefender-free-blocks-login-sites-err-empty-...
Would appear not to be just an issue for Dropbox...
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