I have also tried logging in on the steam browser

The error message gives you all the information you need. Steam is down, you'll need to wait until it's back up before you can log in. Theres nothing we can do to fix this unfortunately.

Getting the same problem been trying to two days straight still cant sign in either

same...

Same.

Update: It's an issue with steam y'all and outpost can't do anything about it, nor can any other third party sites where you login with steam. Just try logging in once a day or something until it's fixed.

There was a problem trying to log you in. This generally happens when Steam's servers go down (which happens more often than you think). We'd recommend trying again, and if it fails then you might have to wait an hour or two before trying again. There's some debugging information below that might be useful if you're still having problems after a few hours.
Error code: 0x0409 — We were unable to validate your login request. Please try again.

Can't log in on Outpost few days now , some one have solution for this problem ?

I use this web site from long long time and i can't go there to trade something i want .

It's been 3 days now for me.

Scrap.tf, Marketplace.tf, and Backpack.tf work fine.

It most certainly is not a problem with steam if I can login to the other sites easily.

I completely agree!

Same, don't work 3 days

It global problem I think

Same lads...f#!k

ok i hope they repair this error i still can't log in on Outpost

+

Originally posted by Nooge:

The error message gives you all the information you need. Steam is down, you'll need to wait until it's back up before you can log in. Theres nothing we can do to fix this unfortunately.

I am getting this message on mobile only and steam has not down the whole time (I have had this problem for 24 hours but only on my phone). What can I do to fix this?