Does anyone knows how and where to configure to resolve the CORS issue in mattermost server? Appreciate the help.

Hi, @joblemjose In terms of configuration within Mattermost itself, I suggest you to check on the Configuration Settings documentation to understand the available setups which include: Enabling CORS CORS Exposed Headers CORS Allow Credentials CORS Debug Can you please share more information on t…

Hello, Below is the current configuration that set [image] [image] Currently the response header allows access-control-allow-methods: POST How to include access-control-allow-methods: POST, GET, POST Getting the below error message now Response to preflight request doesn’t pass access contr…

I have the same issue with CORS, message delete fails with this: Access to fetch at ‘ https://mattermost.dev.awake.ai/api/v4/posts/e36far8qj3ry9xbuffm8xyhwfe ’ from origin ‘ https://portapp.dev.awake.ai ’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: …

Hi! We have external reverse proxy, Amazon ALB. I guess need to check that next. Thanks Petri

H! Got this issue fixed. Thank you!

How did you fix it as we also have AWS load balancer with no nginx

[image] joblemjose: CORS issue The Same Origin Policy (SOP) is a security measure standardized among browsers. It is needed to prevent Cross-Site Request Forgery (CSRF). The “Origin” mostly refers to a “Domain”. Same Origin Policy prevents different origins (domains) from interacting with eac…

CORS issue on mattermost

Troubleshooting

marcokundt March 25, 2020, 12:23pm 5

Hey,
did you configure your reverse proxy correctly? https://enable-cors.org/server_nginx.html

Marco

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CORS issue on mattermost

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