diff --git a/ports/cpprestsdk/portfile.cmake b/ports/cpprestsdk/portfile.cmake
index efa1c7f26e636e..d9d1c0d1659dd9 100644
--- a/ports/cpprestsdk/portfile.cmake
+++ b/ports/cpprestsdk/portfile.cmake
@@ -11,6 +11,7 @@ vcpkg_from_github(
         fix-clang-dllimport.patch # workaround for https://github.com/microsoft/cpprestsdk/issues/1710
         fix-asio-error.patch
         remove-stdext-checked-array-iterator-1836.patch # https://github.com/microsoft/cpprestsdk/pull/1836
+        remove-openprot-1844.diff # https://github.com/microsoft/cpprestsdk/pull/1844
 )
 
 vcpkg_check_features(
diff --git a/ports/cpprestsdk/remove-openprot-1844.diff b/ports/cpprestsdk/remove-openprot-1844.diff
new file mode 100644
index 00000000000000..292adc61d04d0c
--- /dev/null
+++ b/ports/cpprestsdk/remove-openprot-1844.diff
@@ -0,0 +1,70 @@
+diff --git a/Release/include/cpprest/filestream.h b/Release/include/cpprest/filestream.h
+index 1e4a0f278e2b6ac162c9d191a6d9912eeac8e575..511519a7de820d3308f364557a135d23caf03dd1 100644
+--- a/Release/include/cpprest/filestream.h
++++ b/Release/include/cpprest/filestream.h
+@@ -715,7 +715,7 @@ class basic_file_buffer : public details::streambuf_state_manager<_CharType>
+         const utility::string_t& _Filename,
+         std::ios_base::openmode _Mode = std::ios_base::out,
+ #ifdef _WIN32
+-        int _Prot = (int)std::ios_base::_Openprot
++        int _Prot = _SH_DENYNO
+ #else
+         int _Prot = 0                                         // unsupported on Linux, for now
+ #endif
+@@ -1012,7 +1012,7 @@ class file_stream
+     static pplx::task<streams::basic_istream<_CharType>> open_istream(const utility::string_t& file_name,
+                                                                       std::ios_base::openmode mode = std::ios_base::in,
+ #ifdef _WIN32
+-                                                                      int prot = (int)std::ios_base::_Openprot
++                                                                      int prot = _SH_DENYNO
+ #else
+                                                                       int prot = 0
+ #endif
+@@ -1037,7 +1037,7 @@ class file_stream
+     static pplx::task<streams::basic_ostream<_CharType>> open_ostream(const utility::string_t& file_name,
+                                                                       std::ios_base::openmode mode = std::ios_base::out,
+ #ifdef _WIN32
+-                                                                      int prot = (int)std::ios_base::_Openprot
++                                                                      int prot = _SH_DENYNO
+ #else
+                                                                       int prot = 0
+ #endif
+diff --git a/Release/tests/functional/streams/fstreambuf_tests.cpp b/Release/tests/functional/streams/fstreambuf_tests.cpp
+index 190eb66b0cbf40b3ac1bc207ed5804ab80f20060..bd63633091c24ee99bfd8fcc6c01810759431ecb 100644
+--- a/Release/tests/functional/streams/fstreambuf_tests.cpp
++++ b/Release/tests/functional/streams/fstreambuf_tests.cpp
+@@ -19,7 +19,7 @@ using namespace Windows::Storage;
+ #endif
+ 
+ #ifdef _WIN32
+-#define DEFAULT_PROT (int)std::ios_base::_Openprot
++#define DEFAULT_PROT _SH_DENYNO
+ #else
+ #define DEFAULT_PROT 0
+ #define _SH_DENYRW 0x20
+diff --git a/Release/tests/functional/streams/istream_tests.cpp b/Release/tests/functional/streams/istream_tests.cpp
+index 32cb545aa266cea0217a1acaac1e99aed8ba219e..9feed549ead29426b3300e376295266386055bcd 100644
+--- a/Release/tests/functional/streams/istream_tests.cpp
++++ b/Release/tests/functional/streams/istream_tests.cpp
+@@ -22,7 +22,7 @@ using namespace Windows::Storage;
+ #endif
+ 
+ #ifdef _WIN32
+-#define DEFAULT_PROT (int)std::ios_base::_Openprot
++#define DEFAULT_PROT _SH_DENYNO
+ #else
+ #define DEFAULT_PROT 0
+ #endif
+diff --git a/Release/tests/functional/streams/stdstream_tests.cpp b/Release/tests/functional/streams/stdstream_tests.cpp
+index 34b9b3af1291b8fd53f65ea1eac7babdfffdb74e..4072224e05b79ba3cde46fd14348058b44496502 100644
+--- a/Release/tests/functional/streams/stdstream_tests.cpp
++++ b/Release/tests/functional/streams/stdstream_tests.cpp
+@@ -23,7 +23,7 @@ using namespace Windows::Storage;
+ #endif
+ 
+ #ifdef _WIN32
+-#define DEFAULT_PROT (int)std::ios_base::_Openprot
++#define DEFAULT_PROT _SH_DENYNO
+ #else
+ #define DEFAULT_PROT 0
+ #endif
diff --git a/ports/cpprestsdk/vcpkg.json b/ports/cpprestsdk/vcpkg.json
index 0f76b048c1a896..26d3a9e84dd30b 100644
--- a/ports/cpprestsdk/vcpkg.json
+++ b/ports/cpprestsdk/vcpkg.json
@@ -1,7 +1,7 @@
 {
   "name": "cpprestsdk",
   "version": "2.10.19",
-  "port-version": 4,
+  "port-version": 5,
   "description": [
     "C++11 JSON, REST, and OAuth library",
     "The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services."
diff --git a/versions/baseline.json b/versions/baseline.json
index 716f7012d408da..6e01b2eaf4035c 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -2114,7 +2114,7 @@
     },
     "cpprestsdk": {
       "baseline": "2.10.19",
-      "port-version": 4
+      "port-version": 5
     },
     "cppslippi": {
       "baseline": "1.4.3.18",
diff --git a/versions/c-/cpprestsdk.json b/versions/c-/cpprestsdk.json
index e5ca4739f66a15..f24e525682cb39 100644
--- a/versions/c-/cpprestsdk.json
+++ b/versions/c-/cpprestsdk.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "2cb69b47ff909df5dd29678ec6cde55feefe6d95",
+      "version": "2.10.19",
+      "port-version": 5
+    },
     {
       "git-tree": "9e19a9c742d13629f5a87f99f9fbe5f595ddfc71",
       "version": "2.10.19",