diff --git a/.gitmodules b/.gitmodules
index 2f85c0ab3..94115f227 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "dependencies/spirit-po"]
 	path = dependencies/spirit-po
 	url = https://github.com/cbeck88/spirit-po.git
+[submodule "dependencies/grpc"]
+	path = dependencies/grpc
+	url = https://github.com/grpc/grpc.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8f4e05b75..e544d1bac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,7 @@ include_directories(
 	"dependencies/mariadb-connector-c/include"
 	"dependencies/mariadb-connector-c/build/include"
 	"dependencies/spirit-po/include"
+	"dependencies/grpc/include"
 	"src/cpp/proto"
 	#"dependencies/mariadb-connector-c/build/include"
 	#"dependencies/mariadb-connector-c/include"
@@ -91,6 +92,10 @@ find_library(MYSQL_LIBRARIES mariadbclient.lib PATHS "dependencies/mariadb-conne
 #find_library(MYSQL_LIBRARIES_DEBUG  mariadbclient.lib PATHS "import/mariadb/lib/debug")
 find_library(COMPILED_MARIADB_CLIENT_DEBUG mariadbclient PATHS "dependencies/mariadb-connector-c/build/libmariadb/Debug" REQUIRED)
 find_library(IROHA_ED25519 ed25519 PATHS "dependencies/iroha-ed25519/build/Debug" REQUIRED)
+set(GRPC_PATH "dependencies/grpc/_build/Debug")
+find_library(GRPC_PLUSPLUS grpc++ PATHS ${GRPC_PATH} REQUIRED)
+find_library(GRPC_REFLECTION grpc++_reflection PATHS ${GRPC_PATH} REQUIRED)
+set(GRPC_LIBS ${GRPC_PLUSPLUS} ${GRPC_REFLECTION})
 set(MYSQL_INCLUDE_DIR "dependencies/mariadb-connector-c/include")
 
 #set(POCO_DEBUG_PATH "I:/FremdCode/C++/poco/win64/lib/Debug")
@@ -139,6 +144,7 @@ target_link_libraries(Gradido_LoginServer ${CONAN_LIBS} ${IROHA_ED25519})
 if(WIN32)
 TARGET_LINK_LIBRARIES(Gradido_LoginServer optimized  ${MYSQL_LIBRARIES} Shlwapi)
 TARGET_LINK_LIBRARIES(Gradido_LoginServer debug ${COMPILED_MARIADB_CLIENT_DEBUG} Shlwapi)
+TARGET_LINK_LIBRARIES(Gradido_LoginServer debug ${GRPC_LIBS})
 else(WIN32)
 target_link_libraries(Gradido_LoginServer libmariadb protoc protobuf -pthread)
 endif(WIN32)
diff --git a/README b/README
index f6ca48a88..89783a878 100644
--- a/README
+++ b/README
@@ -20,6 +20,13 @@ cmake -DWITH_SSL=OFF ..
 cd ../../../
 
 
+cd dependencies/grpc
+mkdir _build 
+cd _build 
+cmake ..
+make 
+cd ../../../
+
 # get more dependencies with conan (need conan from https://conan.io/)
 mkdir build && cd build
 conan remote add inexor https://api.bintray.com/conan/inexorgame/inexor-conan
diff --git a/compile_proto.sh b/compile_proto.sh
index 16e3f975f..7e823733d 100755
--- a/compile_proto.sh
+++ b/compile_proto.sh
@@ -6,12 +6,13 @@ if [ ! -d "./src/cpp/proto/gradido" ] ; then
 	mkdir ./src/cpp/proto/gradido
 fi
 
-protoc --cpp_out=./src/cpp/proto --proto_path=./src/proto ./src/proto/gradido/*.proto
+./protoc --cpp_out=./src/cpp/proto --proto_path=./src/proto ./src/proto/gradido/*.proto
 
 if [ ! -d "./src/cpp/proto/hedera" ] ; then 
 	mkdir ./src/cpp/proto/hedera 
 fi
 
 
-protoc --cpp_out=./src/cpp/proto/hedera --proto_path=./src/proto/hedera/hedera-protobuf/src/main/proto ./src/proto/hedera/hedera-protobuf/src/main/proto/*.proto
+./protoc --plugin=protoc-gen-grpc=./grpc_cpp_plugin.exe --cpp_out=./src/cpp/proto/hedera --grpc_out=./src/cpp/proto/hedera --proto_path=./src/proto/hedera/hedera-protobuf/src/main/proto ./src/proto/hedera/hedera-protobuf/src/main/proto/*.proto
+