diff --git a/UPGRADE-7.0.md b/UPGRADE-7.0.md
index 751ef30711d33..7700814e65692 100644
--- a/UPGRADE-7.0.md
+++ b/UPGRADE-7.0.md
@@ -5,4 +5,8 @@ Symfony 6.4 and Symfony 7.0 will be released simultaneously at the end of Novemb
 release process, both versions will have the same features, but Symfony 7.0 won't include any deprecated features.
 To upgrade, make sure to resolve all deprecation notices.
 
-This file will be updated on the branch 7.0 for each deprecated feature that is removed.
+Serializer
+----------
+
+* Remove denormalization support for `AbstractUid` in `UidNormalizer`, use one of `AbstractUid` child class instead
+* Denormalizing to an abstract class in `UidNormalizer` now throws an `\Error`
diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index 8154d3688fce8..208b20702af21 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+7.0
+---
+
+ * Remove denormalization support for `AbstractUid` in `UidNormalizer`, use one of `AbstractUid` child class instead
+ * Denormalizing to an abstract class in `UidNormalizer` now throws an `\Error`
+
 6.3
 ---
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
index 0dfeae7b83fd8..d3e793ed5d394 100644
--- a/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
@@ -15,7 +15,6 @@
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Exception\NotNormalizableValueException;
 use Symfony\Component\Uid\AbstractUid;
-use Symfony\Component\Uid\Uuid;
 
 final class UidNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
 {
@@ -70,32 +69,14 @@ public function supportsNormalization(mixed $data, string $format = null, array
     public function denormalize(mixed $data, string $type, string $format = null, array $context = []): mixed
     {
         try {
-            if (AbstractUid::class === $type) {
-                trigger_deprecation('symfony/serializer', '6.1', 'Denormalizing to an abstract class in "%s" is deprecated.', __CLASS__);
-
-                return Uuid::fromString($data);
-            }
-
             return $type::fromString($data);
         } catch (\InvalidArgumentException|\TypeError) {
             throw NotNormalizableValueException::createForUnexpectedDataType(sprintf('The data is not a valid "%s" string representation.', $type), $data, [Type::BUILTIN_TYPE_STRING], $context['deserialization_path'] ?? null, true);
-        } catch (\Error $e) { // @deprecated remove this catch block in 7.0
-            if (str_starts_with($e->getMessage(), 'Cannot instantiate abstract class')) {
-                return $this->denormalize($data, AbstractUid::class, $format, $context);
-            }
-
-            throw $e;
         }
     }
 
     public function supportsDenormalization(mixed $data, string $type, string $format = null, array $context = []): bool
     {
-        if (AbstractUid::class === $type) {
-            trigger_deprecation('symfony/serializer', '6.1', 'Supporting denormalization for the "%s" type in "%s" is deprecated, use one of "%s" child class instead.', AbstractUid::class, __CLASS__, AbstractUid::class);
-
-            return true;
-        }
-
         return is_subclass_of($type, AbstractUid::class, true);
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/UidNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/UidNormalizerTest.php
index ea00e1161e9e6..b1e5423017705 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/UidNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/UidNormalizerTest.php
@@ -146,14 +146,9 @@ public function testSupportsDenormalizationForNonUid()
         $this->assertFalse($this->normalizer->supportsDenormalization('foo', \stdClass::class));
     }
 
-    /**
-     * @group legacy
-     */
     public function testSupportOurAbstractUid()
     {
-        $this->expectDeprecation('Since symfony/serializer 6.1: Supporting denormalization for the "Symfony\Component\Uid\AbstractUid" type in "Symfony\Component\Serializer\Normalizer\UidNormalizer" is deprecated, use one of "Symfony\Component\Uid\AbstractUid" child class instead.');
-
-        $this->assertTrue($this->normalizer->supportsDenormalization('1ea6ecef-eb9a-66fe-b62b-957b45f17e43', AbstractUid::class));
+        $this->assertFalse($this->normalizer->supportsDenormalization('1ea6ecef-eb9a-66fe-b62b-957b45f17e43', AbstractUid::class));
     }
 
     public function testSupportCustomAbstractUid()
@@ -169,22 +164,18 @@ public function testDenormalize($uuidString, $class)
         $this->assertEquals($class::fromString($uuidString), $this->normalizer->denormalize($uuidString, $class));
     }
 
-    /**
-     * @group legacy
-     */
     public function testDenormalizeOurAbstractUid()
     {
-        $this->expectDeprecation('Since symfony/serializer 6.1: Denormalizing to an abstract class in "Symfony\Component\Serializer\Normalizer\UidNormalizer" is deprecated.');
+        $this->expectException(\Error::class);
+        $this->expectExceptionMessage('Cannot call abstract method Symfony\Component\Uid\AbstractUid::fromString()');
 
         $this->assertEquals(Uuid::fromString($uuidString = '1ea6ecef-eb9a-66fe-b62b-957b45f17e43'), $this->normalizer->denormalize($uuidString, AbstractUid::class));
     }
 
-    /**
-     * @group legacy
-     */
     public function testDenormalizeCustomAbstractUid()
     {
-        $this->expectDeprecation('Since symfony/serializer 6.1: Denormalizing to an abstract class in "Symfony\Component\Serializer\Normalizer\UidNormalizer" is deprecated.');
+        $this->expectException(\Error::class);
+        $this->expectExceptionMessage('Cannot instantiate abstract class Symfony\Component\Serializer\Tests\Normalizer\TestAbstractCustomUid');
 
         $this->assertEquals(Uuid::fromString($uuidString = '1ea6ecef-eb9a-66fe-b62b-957b45f17e43'), $this->normalizer->denormalize($uuidString, TestAbstractCustomUid::class));
     }