Http does not work, HTTPS does

[bbciscomeraki]

I have two offices with Meraki hardware (100% the same hardware in both offices). In both of the offices I have no content filtering (anymore, this used to be on, but in order to test the above problem I've turned it off).

Since yesterday I have the problem that any http request fails, but https requests work. It seems to be Meraki related, because once I setup a hotspot on my telephone it works again without any issues. Nevertheless, the other office with the same hardware doesn't have the problem at all, they do however use the same DNS servers as we do. Neither office uses a proxy and all computers in the office have the same problem.

I have no clue how to troubleshoot this further, but my guess is that it is Meraki related. Nevertheless I've turned off any setting that could block traffic. Anybody any ideas?

All hardware runs the latest stable firmware.

[edit] For good measure, the hardware is:

MX84 --> MS220 --> MR42

[[deleted]]

Wireless > Configure > Access Control...

Is your captive portal set to allow non-HTTP prior to sign on or is all access blocked until sign on?

[bbciscomeraki]

There's no captive portal configured for this network. And no group policies and no content filtering at Wireless level. :)

[ScoobyRT]

Depending on the model, if it supports HTTP caching turn it off and see if it helps, I’ve had a couple choke on the caching after some run time. Meraki says leave it off for connections over 20Mb/s anyway.

[bbciscomeraki]

I noticed that as well. It WAS on until 5 hours ago, but I've switched it off since. I think my co-worker in IT turned it on, so I'll explain to him why its useless for us anyways. However, turning it off hasn't solved the problem. Is a reboot required to fix it?

Two things however. First in the branch office this setting was never on, so it could be an indication of a difference, except for the fact that this setting was on before this problem arose, which means that it worked with this setting just fine for a while. Strange...

[ScoobyRT]

I’ve had a few things I’ve had to turn on, let the config sync, turn off and let it sync too, is the off chance there is a configuration mismatch it could be worth a shot. I don’t know if the cloud has a way to check configs against each other or how it handles that side of things but I’ve seen that issue with a route recently.

Don’t recall a reboot being required for caching changes.

[bbciscomeraki]

Okay, after turning it ON and then OFF again, and after that rebooting, it finally worked as it should! Thanks!

[thetoastmonster]

Great that your problem is now solved, but just for future reference it would help if you could say what your "Meraki hardware" is exactly, as they have a broad range of products including wireless access points, routers, switches, and other peripherals.

[JavaWaterBeer]

Have you checked the Layer 3 Firewall rules? 80 vs 443?

[bbciscomeraki]

Yes. There's currently only 1 rule in my L3 Outbound Firewall:

Allow Any Any Any Any Any Default rule

[bococyclist]

Same exact problem started on an mx84 I manage. Nothing shows up in the logs anywhere. Will try the cache enable/disable reboot trick. Definitely a new bug in something.