I get a 'k_EResultFail' error every time I try to upload my workshop content?

[ConsumerOfSoup]

Here's some more details:
Basically it finishes the uploading and then I get the k_EResultFail error. Whenever I look on my steam workshop page it DID upload something, but that something has no thumbnail or anything and is 0 mb big.
I've tried rebooting terraria, waiting for a day, uploading content that I downloaded off off steam workshop, deleting the empty steam workshop things that get created whenever I get the error, agreeing to the steam terms of service again, and none of those things worked. And my friend can upload steam workshop content just fine! How do I fix this?

 

[BadPiggy1024]

Same issue when uploading world files, but I'm able to upload texture packs.

 

[ConsumerOfSoup]

I really hope I get some help soon, I STILL can't upload my workshop content and it's starting to annoy me haha.

 

[~ ~ ~]

Same problem for me, i'm really frustrated, texture packs work fine, worlds do not.

 

[dossier]

Hello I registered just to share the solution that worked for me...

Figured out my issue maybe this is yours. I had to open ports on my router

Steam P2P ports are the only ports that need to be opened:

• UDP 3478 (Outbound)

• UDP 4379 (Outbound)

• UDP 4380 (Outbound)