diff --git a/pkgs/tools/admin/realvnc-vnc-viewer/darwin.nix b/pkgs/tools/admin/realvnc-vnc-viewer/darwin.nix
index 0a27e2733b51..b55ff360c75e 100644
--- a/pkgs/tools/admin/realvnc-vnc-viewer/darwin.nix
+++ b/pkgs/tools/admin/realvnc-vnc-viewer/darwin.nix
@@ -1,6 +1,6 @@
 { lib
 , stdenvNoCC
-, fetchurl
+, requireFile
 , undmg
 , pname
 , version
@@ -9,9 +9,17 @@
 stdenvNoCC.mkDerivation (finalAttrs: {
   inherit pname version meta;
 
-  src = fetchurl {
-    url = "https://downloads.realvnc.com/download/file/viewer.files/VNC-Viewer-${finalAttrs.version}-MacOSX-universal.dmg";
-    sha256 = "0k72fdnx1zmyi9z5n3lazc7s70gcddxq0s73akp0al0y9hzq9prh";
+  src = requireFile rec {
+      name = "VNC-Viewer-${finalAttrs.version}-MacOSX-universal.dmg";
+      url = "https://downloads.realvnc.com/download/file/viewer.files/${name}";
+      sha256 = "0k72fdnx1zmyi9z5n3lazc7s70gcddxq0s73akp0al0y9hzq9prh";
+      message= ''
+        vnc-viewer can be downloaded from ${url},
+        but the download link require captcha, thus if you wish to use this application,
+        you need to download it manually and use follow command to add downloaded files into nix-store
+
+        $ nix-prefetch-url --type sha256 file:///path/to/${name}
+      '';
   };
   sourceRoot = ".";
 
diff --git a/pkgs/tools/admin/realvnc-vnc-viewer/default.nix b/pkgs/tools/admin/realvnc-vnc-viewer/default.nix
index 9776ececcfd2..38f3986b6a5b 100644
--- a/pkgs/tools/admin/realvnc-vnc-viewer/default.nix
+++ b/pkgs/tools/admin/realvnc-vnc-viewer/default.nix
@@ -17,6 +17,7 @@ let
     };
     maintainers = with maintainers; [ emilytrau onedragon ];
     platforms = [ "x86_64-linux" ] ++ platforms.darwin;
+    hydraPlatforms = [];
     mainProgram = "vncviewer";
   };
 in
diff --git a/pkgs/tools/admin/realvnc-vnc-viewer/linux.nix b/pkgs/tools/admin/realvnc-vnc-viewer/linux.nix
index 63060e48625c..164fe67b6804 100644
--- a/pkgs/tools/admin/realvnc-vnc-viewer/linux.nix
+++ b/pkgs/tools/admin/realvnc-vnc-viewer/linux.nix
@@ -1,6 +1,6 @@
 { lib
 , stdenv
-, fetchurl
+, requireFile
 , autoPatchelfHook
 , rpmextract
 , libX11
@@ -14,9 +14,17 @@ stdenv.mkDerivation (finalAttrs: {
   inherit pname version;
 
   src = {
-    "x86_64-linux" = fetchurl {
-      url = "https://downloads.realvnc.com/download/file/viewer.files/VNC-Viewer-${finalAttrs.version}-Linux-x64.rpm";
+    "x86_64-linux" = requireFile rec {
+      name = "VNC-Viewer-${finalAttrs.version}-Linux-x64.rpm";
+      url = "https://downloads.realvnc.com/download/file/viewer.files/${name}";
       sha256 = "sha256-Ull9iNi8NxB12YwEThWE0P9k1xOV2LZnebuRrVH/zwI=";
+      message= ''
+        vnc-viewer can be downloaded from ${url},
+        but the download link require captcha, thus if you wish to use this application,
+        you need to download it manually and use follow command to add downloaded files into nix-store
+
+        $ nix-prefetch-url --type sha256 file:///path/to/${name}
+      '';
     };
   }.${stdenv.system} or (throw "Unsupported system: ${stdenv.hostPlatform.system}");