diff --git a/compiler/cpp/src/thrift/generate/t_netstd_generator.cc b/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
index 45e658e..ea47782 100644
--- a/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
+++ b/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
@@ -1198,7 +1198,7 @@
 
 void t_netstd_generator::generate_netstd_struct_reader(ostream& out, t_struct* tstruct)
 {
-    out << indent() << "public async Task ReadAsync(TProtocol iprot, CancellationToken cancellationToken)" << endl
+    out << indent() << "public async global::System.Threading.Tasks.Task ReadAsync(TProtocol iprot, CancellationToken cancellationToken)" << endl
         << indent() << "{" << endl;
     indent_up();
     out << indent() << "iprot.IncrementRecursionDepth();" << endl
@@ -1340,7 +1340,7 @@
 
 void t_netstd_generator::generate_netstd_struct_writer(ostream& out, t_struct* tstruct)
 {
-    out << indent() << "public async Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
+    out << indent() << "public async global::System.Threading.Tasks.Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
         << indent() << "{" << endl;
     indent_up();
 
@@ -1390,7 +1390,7 @@
 
 void t_netstd_generator::generate_netstd_struct_result_writer(ostream& out, t_struct* tstruct)
 {
-    out << indent() << "public async Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
+    out << indent() << "public async global::System.Threading.Tasks.Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
         << indent() << "{" << endl;
     indent_up();
 
@@ -1549,7 +1549,7 @@
     out << indent() << "{" << endl;
     indent_up();
 
-    out << indent() << "public abstract Task WriteAsync(TProtocol tProtocol, CancellationToken cancellationToken);" << endl
+    out << indent() << "public abstract global::System.Threading.Tasks.Task WriteAsync(TProtocol tProtocol, CancellationToken cancellationToken);" << endl
         << indent() << "public readonly int Isset;" << endl
         << indent() << "public abstract object Data { get; }" << endl
         << indent() << "protected " << tunion->get_name() << "(int isset)" << endl
@@ -1659,7 +1659,7 @@
     generate_netstd_struct_equals(out, &undefined_struct);
     generate_netstd_struct_hashcode(out, &undefined_struct);
     
-    out << indent() << "public override Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
+    out << indent() << "public override global::System.Threading.Tasks.Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken)" << endl
         << indent() << "{" << endl;
     indent_up();
     out << indent() << "throw new TProtocolException( TProtocolException.INVALID_DATA, \"Cannot persist an union type which is not set.\");" << endl;
@@ -1738,7 +1738,7 @@
     indent_down();
     out << indent() << "}" << endl << endl;
 
-    out << indent() << "public override async Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken) {" << endl;
+    out << indent() << "public override async global::System.Threading.Tasks.Task WriteAsync(TProtocol oprot, CancellationToken cancellationToken) {" << endl;
     indent_up();
 
     out << indent() << "oprot.IncrementRecursionDepth();" << endl
@@ -2162,7 +2162,7 @@
 
     if (extends.empty())
     {
-        out << indent() << "protected delegate Task ProcessFunction(int seqid, TProtocol iprot, TProtocol oprot, CancellationToken cancellationToken);" << endl;
+        out << indent() << "protected delegate global::System.Threading.Tasks.Task ProcessFunction(int seqid, TProtocol iprot, TProtocol oprot, CancellationToken cancellationToken);" << endl;
     }
 
     if (extends.empty())
@@ -2271,7 +2271,7 @@
 void t_netstd_generator::generate_process_function_async(ostream& out, t_service* tservice, t_function* tfunction)
 {
     (void)tservice;
-    out << indent() << "public async Task " << tfunction->get_name()
+    out << indent() << "public async global::System.Threading.Tasks.Task " << tfunction->get_name()
         << "_ProcessAsync(int seqid, TProtocol iprot, TProtocol oprot, CancellationToken cancellationToken)" << endl
         << indent() << "{" << endl;
     indent_up();
@@ -3262,7 +3262,7 @@
 string t_netstd_generator::function_signature_async(t_function* tfunction, string prefix)
 {
     t_type* ttype = tfunction->get_returntype();
-    string task = "Task";
+    string task = "global::System.Threading.Tasks.Task";
     if (!ttype->is_void())
     {
         task += "<" + type_name(ttype) + ">";
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
index 95c85af..c43c71c 100644
--- a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
@@ -55,6 +55,9 @@
     <Exec Condition="Exists('$(PathToThrift)')" Command="$(PathToThrift) -gen netstd:wcf,union,serial -r ./Thrift5253.thrift" />
     <Exec Condition="Exists('thrift')" Command="thrift -gen netstd:wcf,union,serial -r ./Thrift5253.thrift" />
     <Exec Condition="Exists('$(ProjectDir)/../../../../compiler/cpp/thrift')" Command="$(ProjectDir)/../../../../compiler/cpp/thrift -gen netstd:wcf,union,serial -r ./Thrift5253.thrift" />
+    <Exec Condition="Exists('$(PathToThrift)')" Command="$(PathToThrift) -gen netstd:wcf,union,serial -r ./Thrift5320.thrift" />
+    <Exec Condition="Exists('thrift')" Command="thrift -gen netstd:wcf,union,serial -r ./Thrift5320.thrift" />
+    <Exec Condition="Exists('$(ProjectDir)/../../../../compiler/cpp/thrift')" Command="$(ProjectDir)/../../../../compiler/cpp/thrift -gen netstd:wcf,union,serial -r ./Thrift5320.thrift" />
   </Target>
 
 </Project>
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.enum.thrift b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.enum.thrift
new file mode 100644
index 0000000..d4392d6
--- /dev/null
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.enum.thrift
@@ -0,0 +1,25 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+// Testcase for THRIFT-5320 Usage of "Task" as IDL identifier generates uncompileable code
+
+namespace * Thrift5320.enums
+
+enum Task {
+	Zero,
+	More
+}
+
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.exception.thrift b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.exception.thrift
new file mode 100644
index 0000000..b6b8cda
--- /dev/null
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.exception.thrift
@@ -0,0 +1,27 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+// Testcase for THRIFT-5320 Usage of "Task" as IDL identifier generates uncompileable code
+
+namespace * Thrift5320.exceptions
+
+
+
+exception Task { 
+	1: Task left 
+	2: Task right 
+}
+
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.struct.thrift b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.struct.thrift
new file mode 100644
index 0000000..771c487
--- /dev/null
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.struct.thrift
@@ -0,0 +1,26 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+// Testcase for THRIFT-5320 Usage of "Task" as IDL identifier generates uncompileable code
+
+namespace * Thrift5320.structs
+
+
+struct Task { 
+	1: Task left 
+	2: Task right 
+}
+
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.thrift b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.thrift
new file mode 100644
index 0000000..f677973
--- /dev/null
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift5320.thrift
@@ -0,0 +1,40 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+// Testcase for THRIFT-5320 Usage of "Task" as IDL identifier generates uncompileable code
+
+namespace * Thrift5320.Task
+
+include "Thrift5320.enum.thrift"
+include "Thrift5320.exception.thrift"
+include "Thrift5320.struct.thrift"
+
+enum Foobar {
+	Task = 0
+}
+
+
+service Task {
+    Thrift5320.enum.Task Task( 
+		1 : Thrift5320.struct.Task  foo, 
+		2: Foobar bar
+	) throws (
+		1: Thrift5320.exception.Task error
+	)
+}
+
+
+