Our Discourse instance displays a 403 error with the message: “You are not permitted to view the requested resource” when attempting to edit a post as Wiki.
What could be causing this issue? There is no related information in /logs.
Could you watch the browser console logs, and see if anything odd pops up there?
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Of course, as I said I get → 403 “You are not permitted to view the requested resource”
Just to be sure, now the admin settings are group-allowed could you give them a once over to make sure admin and mod are default included for editing wikis (and maybe others if you have tags or images in there)
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I mean like anything besides the 403, is anything else erroring?
Both added, for sure. Thanks for your reply.
I understand but there is nothing more (!)
I’m having trouble making a wiki post as well. I’m getting this error when trying to make one of my own posts a wiki, as well as trying to make another user’s post a wiki.
- I’m an admin
Edit wiki post allowed groupsis set to admins, moderators, everyoneSelf wiki allowed groupsis set to admins, moderators, everyoneEdit post allowed groupsis set to admins, moderators, tl0Edit all post groupsis set to admins, moderators, tl4- The category’s security settings are set to allow
everyoneto see, reply, and create - The category does not have
Make new topics wikis by defaultenabled - nor should it be, not every post should be a wiki in this category - The category does not have any category moderators
- I tried to change post ownership to myself and make the post a wiki - did not work
- I logged in as a test user with tl3 and created a post - did not work
- I tried impersonating the user who made the post, to try and make it a wiki - did not work
- I tried creating my own post and making it a wiki - did not work
- I tried running the site in safe mode - did not work
I’m kind of out of ideas now, not sure what else to try!
Do you use any unofficial plugins?
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Yes:
- BBcode tabs
- Discourse Category Restrictor
- Custom Wizard
- Dynamic Groups
- Landing Pages
- Private Replies
- Private Topics
I went through and disabled each of these one by one and tested each time - still no luck. I disabled all of them, still no luck. I also tried running the site in safe mode, and it didn’t work either.
edited to add: I also just updated the site to v2026.01.0-latest and still no luck.
Hi Jen - are there any errors showing up in the console when you get the error message in the UI?
I’ve tried to replicate your settings on one of my self-hosted instances, but I cannot reproduce the issue and I can create and edit wiki posts as expected.
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Yes - here’s what I’ve got in the console. Before I updated to v2026.01, there weren’t any references to video-thumbnail or video-placeholder. There aren’t any videos at all anywhere on this dev instance.
Here’s the console:
Here’s the response headers:
edited to add: I created a new category and enabled Make new topics wikis by default. I was able to make a new topic in this category which was a wiki. However, I get the same error as before when i click on Remove Wiki for that post.
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Updated our production instance over the weekend, and this issue still persists - both on our dev instance and live instance. Not quite sure where to go from here 
Considering we can’t reproduce it without your custom plugins, it’s very likely that some of these plugins are not fully disabled – they execute code regardless of being enabled –, and by their naming they seem to be overriding some of the guardians, which could lead to this Forbidden response.
I’d comment out these plugins from the YML file, rebuild, and test – just to be sure.
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