XF 2.1 Error message: cookies_required_to_use_this_site

[MennovdH]

I'm getting the following error message at installation right after entering my MySql data:

Oops! We ran into some problems.
cookies_required_to_use_this_site

A couple of threads around here suggested switching browsers would help, but this hasn't worked for me; tried Chrome, Firefox and Edge (urgh, look at what you made me do). Also tried Incognito mode. No dice. Alway the same messsage.

Any suggestions? Why would the installation need cookies anyway?

 

[djbaxter]

Are you blocking cookies in your browsers?

 

[MennovdH]

Nope. I allow cookies just fine. Options on Edge haven't been changed from defaults - I never use it.

I do suddenly wonder if Varnish could be causing my trouble.

 

[Paul B]

Varnish has been known to cause various issues.

Try disabling that and any other server caching which is active.

 

[MennovdH]

Yep. Turns out it was Varnish stripping cookies from the response. I'll have to figure out the best rules for Varnish once this goes into production.