New install (today). I have to manually go into server and set write permissions for App_Data folder and Uploads folder.
However, images attached to new posts do NOT show in the posts, but they do show in the admin.
Please see attached screenshots
 Screenshot 2023-03-07 at 13-42-03 User Attachments · Escort Access Forums.png You have insufficient rights to see the content. Screenshot 2023-03-07 at 13-41-37 Test 4 with image · Escort Access Forums.png You have insufficient rights to see the content.

Thanks for your reply. This is a known issue and will be fixed in the next YAF Release 3.13 (which will be released this weekend).

As a workaround you need to manually import the needed BBCode Extensions via... Admin > Settings > BBCode Extensions > Import List with the BBCodeExtensions.xml (this file can be found in the install folder)

The attached image is not displaying inline in 3.1.13 (but it did work in 3.1.12). There is only a link of the Attached image, which is then downloaded as a general file.
Was there any change done in 3.1.13 to the Attachment functionality?

If the image is only displayed as link and not as image then the image is to big. This has not been changed in the latest version.

This setting was added in 2009. Under Host > Host Setup > Image Attachment & Resize Settings > Image Attachment Display Threshold you can define the maximum size of the image before its shown as links. (The value is in bytes)

Oh, I see this, absolutely correct behavior for a forum!
(For some reason I thought this will force a resize, which of course cannot be the case.)