# Plex Web / Local IP PMS CORS Issues

**URL:** https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023
**Category:** Plex Pass Betas
**Tags:** server-docker, plex-web
**Created:** [December 27, 2024, 12:07am UTC](https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023 "2024-12-27T00:07:08Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![imajes](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/imajes/32/332465_2.png) [@imajes](https://forums.plex.tv/u/imajes)
#### Post date: [December 27, 2024, 12:07am UTC](https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023/1 "2024-12-27T00:07:08Z")

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Server Version#: **1.41.3.9314**  
Player Version#: **4.142.2**

I noticed that one of my test installs was using my wan-ip plex.direct link, and not a local one as it should. I checked console, to discover :

> `Access to XMLHttpRequest at 'https://10-0-40-6.c9edefdb7f3149e99ef96d1bc9f2c726.plex.direct:49374/media/providers?querystring' from origin 'https://app.plex.tv' has been blocked by CORS policy...`

Specific Error:

**Response to `preflight request` doesn’t pass access control check:  
No `Access-Control-Allow-Private-Network` header was present in the `preflight response` for this private network request targeting the `private` address space.**

This happens on newer chrome instances (though not on safari). I imagine it’s a newer addition to the CORS spec – i haven’t really kept up with that lately, so I’m not 100% sure, but that’d be my guess.

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### Author: ![pshanew](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/pshanew/32/160555_2.png) [@pshanew](https://forums.plex.tv/u/pshanew)
#### Post date: [December 27, 2024, 12:48am UTC](https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023/2 "2024-12-27T00:48:06Z")

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Just to be clear, you’re saying you experienced this behavior with a browser on a (local to your network) host connecting to your server via [https://app.plex.tv](https://app.plex.tv), right? With Chrome you experience the above-referenced behavior, with Safari you don’t. Is that right?

Are these session showing as non-local/remote connections in your dashboard? Is that how you first noticed something was amiss?

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### Author: ![imajes](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/imajes/32/332465_2.png) [@imajes](https://forums.plex.tv/u/imajes)
#### Post date: [December 27, 2024, 12:53am UTC](https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023/3 "2024-12-27T00:53:59Z")

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> [@pshanew](#):
>
> Just to be clear, you’re saying you experienced this behavior with a browser on a (local to your network) host connecting to your server via [https://app.plex.tv](https://app.plex.tv), right?

Yes, that’s right.

> [@pshanew](#):
>
> With Chrome you experience the above-referenced behavior, with Safari you don’t. Is that right?

Yes- that’s correct… specifically via arc:

`Arc	131.0.6778.205 (Official Build) (arm64)`  
`Revision	81b36b9535e3e3b610a52df3da48cd81362ec860-refs/branch-heads/6778_155@{#8}`  
`JavaScript	V8 13.1.201.19`  
`User Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`

> [@pshanew](#):
>
> Are these session showing as non-local/remote connections in your dashboard?

Local. 🙂

> [@pshanew](#):
>
> Is that how you first noticed something was amiss?

No, i was fixing my SNI local SSL certs.

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### Author: ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)
#### Post date: [March 27, 2025, 12:54am UTC](https://forums.plex.tv/t/plex-web-local-ip-pms-cors-issues/900023/4 "2025-03-27T00:54:50Z")

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