"Your changes could not be saved" after Update to latest Plex Server Version

Hu guys,

i updated my plex media server to the latest version.

now i am facing the issue, that changes could not be saved if i’m trying to add new media folders to my server.

i have the issue via webaccess and with the plex app.

I restarted plex service, the plex system user has permissions to write/read the specific folders.

Does anyone have the same issue or a solution?

i added a logfile. hope it helps.

Server Version#:PlexMediaServer-1.43.0.10492-121068a07-x86_64_DSM72
Player Version#: APP:1.112.0 WEB-Player: Version 4.159.0
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

Plex Media Server Logs_2026-03-29_17-49-01.zip (2.1 MB)

Thanks for providing your logs.The most common cause of this issue is A lack of communication btween your server and plex.tv.

reboot your modem/router and everything connected to it, including any wireless devices. That should clear any DNS cache corruption that may be casuing your issue.

I do see mention of this in your logs.

Mar 09, 2026 20:02:11.449 [139971652635448] WARN - [HttpClient/HCl#2] HTTP error requesting GET https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx (6, Couldn't resolve host name) (Could not resolve host: plex.tv)
Mar 09, 2026 20:02:15.785 [139971652635448] WARN - [HttpClient/HCl#3] HTTP error requesting GET https://plex.tv/media/providers?X-Plex-Token=xxxxxxxxxxxxxxxxxxxx (6, Couldn't resolve host name) (Could not resolve host: plex.tv)

I can add folders and files to my rootfolder for films named“Filme”. It works fine. But for the rootfolder “Serien” i still receive the errormessage.

i try to restart all my devices but i doubt it’s the solution.

Edit:

After restarting and flushing the dns-cache the error still persist.

Before i updated the server everything worked fine for almost a year.

I remove and re-permitted the system-user for the folders.

Because of the fact, that i’am still able to add films and the plexmedia-systemuser has permissions, i think it’s not a DNS or permission issue, it’s something different.

I’d like to do a rollback to a earlier version, maybe it helps. Can anyone provide me the path/link to the older versions. This search-function here is awefull and i can’t find what i’m looking for.

So finally i did a rollback to Version: 1.41.5.9626-72009626 and everything works fine again.

It is something wrong with the latest version. To the dev’s: Please have a review of this issue and use my logfile to find a solution.

If the dev’s need further information or a user to recur the error, reach out and write me a message.

The problem you’re having is due to having too many paths added to your library.

You should really only a few paths here which point to the root path of your library type (e.g. D:\Media\TV Shows). You should only add more paths here if you have more content on different drives or network locations.

After a rollback i can add more folders. So the issue is definitely “NOT” the amount of folders.

The systemuser have access to the rootfolder “Serien”. But when i add folders, following the naming convetion (e.g. \Serien\Dr. Brumm\Season 01\File_S01E01) no media will be added.

It’s nessesary for me to add the Folder (in my example Dr. Brumm), otherwise plex dont find the new folder if i just copy it into the “Serien”-Folder. So anyway, its relateted to plex.

After adding a new folder, you simply trigger “Scan Library Files”.
If that doesn’t find the newly added items, check access permissions and your naming schema.
Particularly, from your example, it should be
\Serien\Dr. Brumm (year)\Season 01\File-S01E01.ext

The older version works because the newer version has stricter size limits on HTTP requests. Request strings should never be getting this long, and in your case the solution is to remove the unnecessarily added paths.

Stick to the recommended organisation guidelines and you won’t need to add separate paths: https://support.plex.tv/articles/naming-and-organizing-your-tv-show-files/

Thats the problem.

Thats the problem. I stick to the recommended organisation guidelines and still need to add separate paths.

Sometimes a series or a film will be added when i trigger “Scan Libary Files” and sometimes not. I can trigger it severeal times, but nothing happen, sometime i dont even need to push the button and the new stuff is found by plex-scanner.

So its not a problem of a permission! The problem here is Plex. Why it is so inconsistent when try to add Files or Folders via “Scan Libary Files”?

I am afraid to change the version, because what happens when this problem will persists after the version-change?