diff --git a/lib/ansible/modules/extras/windows/win_nssm.ps1 b/lib/ansible/modules/extras/windows/win_nssm.ps1
index bf4e798fca5..37a8430ec7b 100644
--- a/lib/ansible/modules/extras/windows/win_nssm.ps1
+++ b/lib/ansible/modules/extras/windows/win_nssm.ps1
@@ -149,7 +149,9 @@ Function ParseAppParameters()
         [string]$appParameters
     )
 
-    return ConvertFrom-StringData -StringData $appParameters.TrimStart("@").TrimStart("{").TrimEnd("}").Replace("; ","`n")
+    $escapedAppParameters = $appParameters.TrimStart("@").TrimStart("{").TrimEnd("}").Replace("; ","`n").Replace("\","\\")
+
+    return ConvertFrom-StringData -StringData $escapedAppParameters
 }
 
 
diff --git a/lib/ansible/modules/extras/windows/win_nssm.py b/lib/ansible/modules/extras/windows/win_nssm.py
index 1f42f21f45a..462f01edba2 100644
--- a/lib/ansible/modules/extras/windows/win_nssm.py
+++ b/lib/ansible/modules/extras/windows/win_nssm.py
@@ -86,11 +86,6 @@ options:
       - Password to be used for service startup
     required: false
     default: null
-  password:
-    description:
-      - Password to be used for service startup
-    required: false
-    default: null
   start_mode:
     description:
       - If C(auto) is selected, the service will start at bootup. C(manual) means that the service will start only when another service needs it. C(disabled) means that the service will stay off, regardless if it is needed or not.