diff --git a/Compiler/AutowirePass.php b/Compiler/AutowirePass.php
index e394cf105..ef5642c3a 100644
--- a/Compiler/AutowirePass.php
+++ b/Compiler/AutowirePass.php
@@ -459,26 +459,26 @@ private function getAutowiredReference(TypedReference $reference, bool $filterTy
         $name = $target = (array_filter($reference->getAttributes(), static fn ($a) => $a instanceof Target)[0] ?? null)?->name;
 
         if (null !== $name ??= $reference->getName()) {
-            if ($this->container->has($alias = $type.' $'.$name) && !$this->container->findDefinition($alias)->isAbstract()) {
+            if ($this->container->has($alias = $type.' $'.$name) && $this->canDefinitionBeAutowired($alias)) {
                 return new TypedReference($alias, $type, $reference->getInvalidBehavior());
             }
 
-            if (null !== ($alias = $this->getCombinedAlias($type, $name)) && !$this->container->findDefinition($alias)->isAbstract()) {
+            if (null !== ($alias = $this->getCombinedAlias($type, $name)) && $this->canDefinitionBeAutowired($alias)) {
                 return new TypedReference($alias, $type, $reference->getInvalidBehavior());
             }
 
             $parsedName = (new Target($name))->getParsedName();
 
-            if ($this->container->has($alias = $type.' $'.$parsedName) && !$this->container->findDefinition($alias)->isAbstract()) {
+            if ($this->container->has($alias = $type.' $'.$parsedName) && $this->canDefinitionBeAutowired($alias)) {
                 return new TypedReference($alias, $type, $reference->getInvalidBehavior());
             }
 
-            if (null !== ($alias = $this->getCombinedAlias($type, $parsedName)) && !$this->container->findDefinition($alias)->isAbstract()) {
+            if (null !== ($alias = $this->getCombinedAlias($type, $parsedName)) && $this->canDefinitionBeAutowired($alias)) {
                 return new TypedReference($alias, $type, $reference->getInvalidBehavior());
             }
 
-            if (($this->container->has($n = $name) && !$this->container->findDefinition($n)->isAbstract())
-                || ($this->container->has($n = $parsedName) && !$this->container->findDefinition($n)->isAbstract())
+            if (($this->container->has($n = $name) && $this->canDefinitionBeAutowired($n))
+                || ($this->container->has($n = $parsedName) && $this->canDefinitionBeAutowired($n))
             ) {
                 foreach ($this->container->getAliases() as $id => $alias) {
                     if ($n === (string) $alias && str_starts_with($id, $type.' $')) {
@@ -492,17 +492,24 @@ private function getAutowiredReference(TypedReference $reference, bool $filterTy
             }
         }
 
-        if ($this->container->has($type) && !$this->container->findDefinition($type)->isAbstract()) {
+        if ($this->container->has($type) && $this->canDefinitionBeAutowired($type)) {
             return new TypedReference($type, $type, $reference->getInvalidBehavior());
         }
 
-        if (null !== ($alias = $this->getCombinedAlias($type)) && !$this->container->findDefinition($alias)->isAbstract()) {
+        if (null !== ($alias = $this->getCombinedAlias($type)) && $this->canDefinitionBeAutowired($alias)) {
             return new TypedReference($alias, $type, $reference->getInvalidBehavior());
         }
 
         return null;
     }
 
+    private function canDefinitionBeAutowired(string $id): bool
+    {
+        $definition = $this->container->findDefinition($id);
+
+        return !$definition->isAbstract() && !$definition->hasTag('container.excluded');
+    }
+
     /**
      * Populates the list of available types.
      */
diff --git a/Dumper/PhpDumper.php b/Dumper/PhpDumper.php
index fb2d45f92..90050ef97 100644
--- a/Dumper/PhpDumper.php
+++ b/Dumper/PhpDumper.php
@@ -799,7 +799,7 @@ private function addServiceConfigurator(Definition $definition, string $variable
 
         if (\is_array($callable)) {
             if ($callable[0] instanceof Reference
-                || ($callable[0] instanceof Definition && $this->definitionVariables->contains($callable[0]))
+                || ($callable[0] instanceof Definition && $this->definitionVariables->offsetExists($callable[0]))
             ) {
                 return \sprintf("        %s->%s(\$%s);\n", $this->dumpValue($callable[0]), $callable[1], $variableName);
             }
@@ -1187,7 +1187,7 @@ private function addNewInstance(Definition $definition, string $return = '', ?st
 
             if (['...'] === $arguments && ('Closure' !== ($class = $definition->getClass() ?: 'Closure') || $definition->isLazy() && (
                 $callable[0] instanceof Reference
-                || ($callable[0] instanceof Definition && !$this->definitionVariables->contains($callable[0]))
+                || ($callable[0] instanceof Definition && !$this->definitionVariables->offsetExists($callable[0]))
             ))) {
                 $initializer = 'fn () => '.$this->dumpValue($callable[0]);
 
@@ -1195,7 +1195,7 @@ private function addNewInstance(Definition $definition, string $return = '', ?st
             }
 
             if ($callable[0] instanceof Reference
-                || ($callable[0] instanceof Definition && $this->definitionVariables->contains($callable[0]))
+                || ($callable[0] instanceof Definition && $this->definitionVariables->offsetExists($callable[0]))
             ) {
                 return $return.\sprintf('%s->%s(%s)', $this->dumpValue($callable[0]), $callable[1], $arguments ? implode(', ', $arguments) : '').$tail;
             }
@@ -1937,7 +1937,7 @@ private function dumpValue(mixed $value, bool $interpolate = true): string
             if ($value->hasErrors() && $e = $value->getErrors()) {
                 return \sprintf('throw new RuntimeException(%s)', $this->export(reset($e)));
             }
-            if ($this->definitionVariables?->contains($value)) {
+            if ($this->definitionVariables?->offsetExists($value)) {
                 return $this->dumpValue($this->definitionVariables[$value], $interpolate);
             }
             if ($value->getMethodCalls()) {
diff --git a/Tests/Compiler/AutowirePassTest.php b/Tests/Compiler/AutowirePassTest.php
index 114d514ad..d6bbbc70f 100644
--- a/Tests/Compiler/AutowirePassTest.php
+++ b/Tests/Compiler/AutowirePassTest.php
@@ -1322,7 +1322,7 @@ public function testTypeSymbolExcluded()
     {
         $container = new ContainerBuilder();
 
-        $container->register(Foo::class)->setAbstract(true)->addTag('container.excluded', ['source' => 'for tests']);
+        $container->register(Foo::class)->addTag('container.excluded', ['source' => 'for tests']);
         $aDefinition = $container->register('a', NotGuessableArgument::class);
         $aDefinition->setAutowired(true);
 
@@ -1339,7 +1339,7 @@ public function testTypeNamespaceExcluded()
     {
         $container = new ContainerBuilder();
 
-        $container->register(__NAMESPACE__)->setAbstract(true)->addTag('container.excluded');
+        $container->register(__NAMESPACE__)->addTag('container.excluded');
         $aDefinition = $container->register('a', NotGuessableArgument::class);
         $aDefinition->setAutowired(true);
 
diff --git a/Tests/Dumper/PhpDumperTest.php b/Tests/Dumper/PhpDumperTest.php
index a117a69a0..f9302e818 100644
--- a/Tests/Dumper/PhpDumperTest.php
+++ b/Tests/Dumper/PhpDumperTest.php
@@ -1877,7 +1877,7 @@ public function testClosureProxy()
     {
         $container = new ContainerBuilder();
         $container->register('closure_proxy', SingleMethodInterface::class)
-            ->setPublic('true')
+            ->setPublic(true)
             ->setFactory(['Closure', 'fromCallable'])
             ->setArguments([[new Reference('foo'), 'cloneFoo']])
             ->setLazy(true);
@@ -1899,12 +1899,12 @@ public function testClosure()
     {
         $container = new ContainerBuilder();
         $container->register('closure', 'Closure')
-            ->setPublic('true')
+            ->setPublic(true)
             ->setFactory(['Closure', 'fromCallable'])
             ->setArguments([new Reference('bar')]);
         $container->register('bar', 'stdClass');
         $container->register('closure_of_service_closure', 'Closure')
-            ->setPublic('true')
+            ->setPublic(true)
             ->setFactory(['Closure', 'fromCallable'])
             ->setArguments([new ServiceClosureArgument(new Reference('bar2'))]);
         $container->register('bar2', 'stdClass');
@@ -1918,15 +1918,15 @@ public function testAutowireClosure()
     {
         $container = new ContainerBuilder();
         $container->register('foo', Foo::class)
-            ->setPublic('true');
+            ->setPublic(true);
         $container->register('my_callable', MyCallable::class)
-            ->setPublic('true');
+            ->setPublic(true);
         $container->register('baz', \Closure::class)
             ->setFactory(['Closure', 'fromCallable'])
             ->setArguments(['var_dump'])
-            ->setPublic('true');
+            ->setPublic(true);
         $container->register('bar', LazyClosureConsumer::class)
-            ->setPublic('true')
+            ->setPublic(true)
             ->setAutowired(true);
         $container->compile();
         $dumper = new PhpDumper($container);
@@ -1952,12 +1952,12 @@ public function testLazyClosure()
     {
         $container = new ContainerBuilder();
         $container->register('closure1', 'Closure')
-            ->setPublic('true')
+            ->setPublic(true)
             ->setFactory(['Closure', 'fromCallable'])
             ->setLazy(true)
             ->setArguments([[new Reference('foo'), 'cloneFoo']]);
         $container->register('closure2', 'Closure')
-            ->setPublic('true')
+            ->setPublic(true)
             ->setFactory(['Closure', 'fromCallable'])
             ->setLazy(true)
             ->setArguments([[new Reference('foo_void'), '__invoke']]);
@@ -1991,10 +1991,10 @@ public function testLazyAutowireAttribute()
     {
         $container = new ContainerBuilder();
         $container->register('foo', Foo::class)
-            ->setPublic('true');
+            ->setPublic(true);
         $container->setAlias(Foo::class, 'foo');
         $container->register('bar', LazyServiceConsumer::class)
-            ->setPublic('true')
+            ->setPublic(true)
             ->setAutowired(true);
         $container->compile();
         $dumper = new PhpDumper($container);
@@ -2020,7 +2020,7 @@ public function testLazyAutowireAttributeWithIntersection()
     {
         $container = new ContainerBuilder();
         $container->register('foo', AAndIInterfaceConsumer::class)
-            ->setPublic('true')
+            ->setPublic(true)
             ->setAutowired(true);
 
         $container->compile();
@@ -2048,7 +2048,7 @@ public function testCallableAdapterConsumer()
         $container = new ContainerBuilder();
         $container->register('foo', Foo::class);
         $container->register('bar', CallableAdapterConsumer::class)
-            ->setPublic('true')
+            ->setPublic(true)
             ->setAutowired(true);
         $container->compile();
         $dumper = new PhpDumper($container);