diff --git a/Jellyfin.Api/Controllers/ConfigurationController.cs b/Jellyfin.Api/Controllers/ConfigurationController.cs
index 8dcaebf6db..9e03fbeb06 100644
--- a/Jellyfin.Api/Controllers/ConfigurationController.cs
+++ b/Jellyfin.Api/Controllers/ConfigurationController.cs
@@ -3,8 +3,6 @@ using System.ComponentModel.DataAnnotations;
 using System.Net.Mime;
 using System.Text.Json;
 using Jellyfin.Api.Attributes;
-using Jellyfin.Api.Constants;
-using Jellyfin.Api.Models.ConfigurationDtos;
 using Jellyfin.Extensions.Json;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Controller.Configuration;
@@ -143,22 +141,4 @@ public class ConfigurationController : BaseJellyfinApiController
 
         return NoContent();
     }
-
-    /// <summary>
-    /// Updates the path to the media encoder.
-    /// </summary>
-    /// <param name="mediaEncoderPath">Media encoder path form body.</param>
-    /// <response code="204">Media encoder path updated.</response>
-    /// <returns>Status.</returns>
-    [Obsolete("This endpoint is obsolete.")]
-    [ApiExplorerSettings(IgnoreApi = true)]
-    [HttpPost("MediaEncoder/Path")]
-    [Authorize(Policy = Policies.FirstTimeSetupOrElevated)]
-    [ProducesResponseType(StatusCodes.Status204NoContent)]
-    public ActionResult UpdateMediaEncoderPath([FromBody, Required] MediaEncoderPathDto mediaEncoderPath)
-    {
-        // API ENDPOINT DISABLED (NOOP) FOR SECURITY PURPOSES
-        // _mediaEncoder.UpdateEncoderPath(mediaEncoderPath.Path, mediaEncoderPath.PathType);
-        return NoContent();
-    }
 }
diff --git a/Jellyfin.Api/Controllers/EnvironmentController.cs b/Jellyfin.Api/Controllers/EnvironmentController.cs
index 284a97621d..70a8c72c0f 100644
--- a/Jellyfin.Api/Controllers/EnvironmentController.cs
+++ b/Jellyfin.Api/Controllers/EnvironmentController.cs
@@ -128,20 +128,6 @@ public class EnvironmentController : BaseJellyfinApiController
         return NoContent();
     }
 
-    /// <summary>
-    /// Gets network paths.
-    /// </summary>
-    /// <response code="200">Empty array returned.</response>
-    /// <returns>List of entries.</returns>
-    [Obsolete("This endpoint is obsolete.")]
-    [HttpGet("NetworkShares")]
-    [ProducesResponseType(StatusCodes.Status200OK)]
-    public ActionResult<IEnumerable<FileSystemEntryInfo>> GetNetworkShares()
-    {
-        _logger.LogWarning("Obsolete endpoint accessed: /Environment/NetworkShares");
-        return Array.Empty<FileSystemEntryInfo>();
-    }
-
     /// <summary>
     /// Gets available drives from the server's file system.
     /// </summary>
diff --git a/Jellyfin.Api/Controllers/QuickConnectController.cs b/Jellyfin.Api/Controllers/QuickConnectController.cs
index 14f5265aa7..2a15ff767c 100644
--- a/Jellyfin.Api/Controllers/QuickConnectController.cs
+++ b/Jellyfin.Api/Controllers/QuickConnectController.cs
@@ -65,16 +65,6 @@ public class QuickConnectController : BaseJellyfinApiController
         }
     }
 
-    /// <summary>
-    /// Old version of <see cref="InitiateQuickConnect" /> using a GET method.
-    /// Still available to avoid breaking compatibility.
-    /// </summary>
-    /// <returns>The result of <see cref="InitiateQuickConnect" />.</returns>
-    [Obsolete("Use POST request instead")]
-    [HttpGet("Initiate")]
-    [ApiExplorerSettings(IgnoreApi = true)]
-    public Task<ActionResult<QuickConnectResult>> InitiateQuickConnectLegacy() => InitiateQuickConnect();
-
     /// <summary>
     /// Attempts to retrieve authentication information.
     /// </summary>
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index 2817e3cbc7..bd6d931b21 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -69,7 +69,6 @@ public class TvShowsController : BaseJellyfinApiController
     /// <param name="enableUserData">Optional. Include user data.</param>
     /// <param name="nextUpDateCutoff">Optional. Starting date of shows to show in Next Up section.</param>
     /// <param name="enableTotalRecordCount">Whether to enable the total records count. Defaults to true.</param>
-    /// <param name="disableFirstEpisode">Whether to disable sending the first episode in a series as next up.</param>
     /// <param name="enableResumable">Whether to include resumable episodes in next up results.</param>
     /// <param name="enableRewatching">Whether to include watched episodes in next up results.</param>
     /// <returns>A <see cref="QueryResult{BaseItemDto}"/> with the next up episodes.</returns>
@@ -88,7 +87,6 @@ public class TvShowsController : BaseJellyfinApiController
         [FromQuery] bool? enableUserData,
         [FromQuery] DateTime? nextUpDateCutoff,
         [FromQuery] bool enableTotalRecordCount = true,
-        [FromQuery][ParameterObsolete] bool disableFirstEpisode = false,
         [FromQuery] bool enableResumable = true,
         [FromQuery] bool enableRewatching = false)
     {
diff --git a/Jellyfin.Api/Controllers/UserController.cs b/Jellyfin.Api/Controllers/UserController.cs
index d0ced277a0..536b95dbb5 100644
--- a/Jellyfin.Api/Controllers/UserController.cs
+++ b/Jellyfin.Api/Controllers/UserController.cs
@@ -337,29 +337,6 @@ public class UserController : BaseJellyfinApiController
         [FromBody, Required] UpdateUserPassword request)
         => UpdateUserPassword(userId, request);
 
-    /// <summary>
-    /// Updates a user's easy password.
-    /// </summary>
-    /// <param name="userId">The user id.</param>
-    /// <param name="request">The <see cref="UpdateUserEasyPassword"/> request.</param>
-    /// <response code="204">Password successfully reset.</response>
-    /// <response code="403">User is not allowed to update the password.</response>
-    /// <response code="404">User not found.</response>
-    /// <returns>A <see cref="NoContentResult"/> indicating success or a <see cref="ForbidResult"/> or a <see cref="NotFoundResult"/> on failure.</returns>
-    [HttpPost("{userId}/EasyPassword")]
-    [Obsolete("Use Quick Connect instead")]
-    [ApiExplorerSettings(IgnoreApi = true)]
-    [Authorize]
-    [ProducesResponseType(StatusCodes.Status204NoContent)]
-    [ProducesResponseType(StatusCodes.Status403Forbidden)]
-    [ProducesResponseType(StatusCodes.Status404NotFound)]
-    public ActionResult UpdateUserEasyPassword(
-        [FromRoute, Required] Guid userId,
-        [FromBody, Required] UpdateUserEasyPassword request)
-    {
-        return Forbid();
-    }
-
     /// <summary>
     /// Updates a user.
     /// </summary>
diff --git a/Jellyfin.Api/Models/ConfigurationDtos/MediaEncoderPathDto.cs b/Jellyfin.Api/Models/ConfigurationDtos/MediaEncoderPathDto.cs
deleted file mode 100644
index 5a48345eb6..0000000000
--- a/Jellyfin.Api/Models/ConfigurationDtos/MediaEncoderPathDto.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-namespace Jellyfin.Api.Models.ConfigurationDtos;
-
-/// <summary>
-/// Media Encoder Path Dto.
-/// </summary>
-public class MediaEncoderPathDto
-{
-    /// <summary>
-    /// Gets or sets media encoder path.
-    /// </summary>
-    public string Path { get; set; } = null!;
-
-    /// <summary>
-    /// Gets or sets media encoder path type.
-    /// </summary>
-    public string PathType { get; set; } = null!;
-}
diff --git a/Jellyfin.Api/Models/StartupDtos/StartupRemoteAccessDto.cs b/Jellyfin.Api/Models/StartupDtos/StartupRemoteAccessDto.cs
index 9c29e372cf..2a1a312d54 100644
--- a/Jellyfin.Api/Models/StartupDtos/StartupRemoteAccessDto.cs
+++ b/Jellyfin.Api/Models/StartupDtos/StartupRemoteAccessDto.cs
@@ -1,4 +1,3 @@
-using System;
 using System.ComponentModel.DataAnnotations;
 
 namespace Jellyfin.Api.Models.StartupDtos;
@@ -13,11 +12,4 @@ public class StartupRemoteAccessDto
     /// </summary>
     [Required]
     public bool EnableRemoteAccess { get; set; }
-
-    /// <summary>
-    /// Gets or sets a value indicating whether enable automatic port mapping.
-    /// </summary>
-    [Required]
-    [Obsolete("No longer supported")]
-    public bool EnableAutomaticPortMapping { get; set; }
 }
diff --git a/Jellyfin.Api/Models/UserDtos/UpdateUserEasyPassword.cs b/Jellyfin.Api/Models/UserDtos/UpdateUserEasyPassword.cs
deleted file mode 100644
index f19d0b57a1..0000000000
--- a/Jellyfin.Api/Models/UserDtos/UpdateUserEasyPassword.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-namespace Jellyfin.Api.Models.UserDtos;
-
-/// <summary>
-/// The update user easy password request body.
-/// </summary>
-public class UpdateUserEasyPassword
-{
-    /// <summary>
-    /// Gets or sets the new sha1-hashed password.
-    /// </summary>
-    public string? NewPassword { get; set; }
-
-    /// <summary>
-    /// Gets or sets the new password.
-    /// </summary>
-    public string? NewPw { get; set; }
-
-    /// <summary>
-    /// Gets or sets a value indicating whether to reset the password.
-    /// </summary>
-    public bool ResetPassword { get; set; }
-}
diff --git a/MediaBrowser.Model/Session/ClientCapabilities.cs b/MediaBrowser.Model/Session/ClientCapabilities.cs
index fc1f24ae16..9b243c1173 100644
--- a/MediaBrowser.Model/Session/ClientCapabilities.cs
+++ b/MediaBrowser.Model/Session/ClientCapabilities.cs
@@ -31,15 +31,5 @@ namespace MediaBrowser.Model.Session
         public string AppStoreUrl { get; set; }
 
         public string IconUrl { get; set; }
-
-        // TODO: Remove after 10.9
-        [Obsolete("Unused")]
-        [DefaultValue(false)]
-        public bool? SupportsContentUploading { get; set; } = false;
-
-        // TODO: Remove after 10.9
-        [Obsolete("Unused")]
-        [DefaultValue(false)]
-        public bool? SupportsSync { get; set; } = false;
     }
 }