From a272efb9a21720293199a0e3740f8529fd2abf46 Mon Sep 17 00:00:00 2001
From: Shadowghost <Ghost_of_Stone@web.de>
Date: Mon, 3 Aug 2026 08:48:09 +0200
Subject: Fix disabled plugins being re-enabled on restart

---
 .../Plugins/PluginManager.cs                       | 32 +++++++++++++++-------
 .../Updates/InstallationManager.cs                 |  5 ++--
 2 files changed, 25 insertions(+), 12 deletions(-)

(limited to 'Emby.Server.Implementations')

diff --git a/Emby.Server.Implementations/Plugins/PluginManager.cs b/Emby.Server.Implementations/Plugins/PluginManager.cs
index f699c99d85..8d29d6a512 100644
--- a/Emby.Server.Implementations/Plugins/PluginManager.cs
+++ b/Emby.Server.Implementations/Plugins/PluginManager.cs
@@ -255,6 +255,14 @@ namespace Emby.Server.Implementations.Plugins
             }
 
             _plugins.Add(plugin);
+
+            // Updating a disabled plugin must not enable it again.
+            if (plugin.Manifest.Status == PluginStatus.Disabled)
+            {
+                ProcessAlternative(plugin);
+                return;
+            }
+
             EnablePlugin(plugin);
         }
 
@@ -632,9 +640,10 @@ namespace Emby.Server.Implementations.Plugins
                 return;
             }
 
-            var predecessor = _plugins.OrderByDescending(p => p.Version)
-                .FirstOrDefault(p => p.Id.Equals(plugin.Id) && p.IsEnabledAndSupported && p.Version != plugin.Version);
-            if (predecessor is not null)
+            var successor = _plugins.FirstOrDefault(p => p.Id.Equals(plugin.Id)
+                && p.Version > plugin.Version
+                && (p.IsEnabledAndSupported || p.Manifest.Status == PluginStatus.Disabled));
+            if (successor is not null)
             {
                 return;
             }
@@ -763,6 +772,8 @@ namespace Emby.Server.Implementations.Plugins
                 var entry = versions[x];
                 if (!string.Equals(lastName, entry.Name, StringComparison.OrdinalIgnoreCase))
                 {
+                    lastName = string.Empty;
+
                     if (!TryGetPluginDlls(entry, out var allowedDlls))
                     {
                         _logger.LogError("One or more assembly paths was invalid. Marking plugin {Plugin} as \"Malfunctioned\".", entry.Name);
@@ -772,15 +783,18 @@ namespace Emby.Server.Implementations.Plugins
 
                     entry.DllFiles = allowedDlls;
 
+                    // Only clean up older versions when this version will actually be loaded.
                     if (entry.IsEnabledAndSupported)
                     {
                         lastName = entry.Name;
-                        continue;
                     }
+
+                    continue;
                 }
 
                 if (string.IsNullOrEmpty(lastName))
                 {
+                    // Unnamed plugin, so there is nothing to match older versions against.
                     continue;
                 }
 
@@ -891,9 +905,9 @@ namespace Emby.Server.Implementations.Plugins
 
             if (previousVersion is null)
             {
-                // This value is memory only - so that the web will show restart required.
-                plugin.Manifest.Status = PluginStatus.Restart;
-                plugin.Manifest.AutoUpdate = false;
+                // Memory only, so that the web will show restart required. The manifest must keep
+                // holding the persisted state, or a later save would write the wrong state to disk.
+                plugin.RestartRequired = true;
                 return;
             }
 
@@ -906,9 +920,7 @@ namespace Emby.Server.Implementations.Plugins
                 _logger.LogError("Unable to supercede version {Version} of {Name}", previousVersion.Version, previousVersion.Name);
             }
 
-            // This value is memory only - so that the web will show restart required.
-            plugin.Manifest.Status = PluginStatus.Restart;
-            plugin.Manifest.AutoUpdate = false;
+            plugin.RestartRequired = true;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Updates/InstallationManager.cs b/Emby.Server.Implementations/Updates/InstallationManager.cs
index 6a60f7f5f6..174234b96b 100644
--- a/Emby.Server.Implementations/Updates/InstallationManager.cs
+++ b/Emby.Server.Implementations/Updates/InstallationManager.cs
@@ -500,8 +500,9 @@ namespace Emby.Server.Implementations.Updates
             var plugins = _pluginManager.Plugins;
             foreach (var plugin in plugins)
             {
-                // Don't auto update when plugin marked not to, or when it's disabled.
-                if (plugin.Manifest?.AutoUpdate == false || plugin.Manifest?.Status == PluginStatus.Disabled)
+                // Don't auto update when plugin marked not to, or when it's disabled or pending removal.
+                if (plugin.Manifest?.AutoUpdate == false
+                    || plugin.Manifest?.Status is PluginStatus.Disabled or PluginStatus.Deleted)
                 {
                     continue;
                 }
-- 
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