diff --git a/browser/components/enterprisepolicies/Policies.jsm b/browser/components/enterprisepolicies/Policies.jsm
index 996c3ad6c011..eba55ec75ff0 100644
--- a/browser/components/enterprisepolicies/Policies.jsm
+++ b/browser/components/enterprisepolicies/Policies.jsm
@@ -942,6 +942,10 @@ var Policies = {
     },
   },
 
+  LegacyProfiles: {
+    // Handled in nsToolkitProfileService.cpp (Windows only)
+  },
+
   LocalFileLinks: {
     onBeforeAddons(manager, param) {
       // If there are existing capabilities, lock them with the policy pref.
diff --git a/browser/components/enterprisepolicies/schemas/policies-schema.json b/browser/components/enterprisepolicies/schemas/policies-schema.json
index 493747c08bff..fb3d9d507c1b 100644
--- a/browser/components/enterprisepolicies/schemas/policies-schema.json
+++ b/browser/components/enterprisepolicies/schemas/policies-schema.json
@@ -477,6 +477,10 @@
       }
     },
 
+    "LegacyProfiles": {
+      "type": "boolean"
+    },
+
     "LocalFileLinks": {
       "type": "array",
       "items": {
diff --git a/toolkit/profile/nsToolkitProfileService.cpp b/toolkit/profile/nsToolkitProfileService.cpp
index 01131dd5b9ef..37771c33d821 100644
--- a/toolkit/profile/nsToolkitProfileService.cpp
+++ b/toolkit/profile/nsToolkitProfileService.cpp
@@ -14,6 +14,7 @@
 #ifdef XP_WIN
 #  include <windows.h>
 #  include <shlobj.h>
+#  include "mozilla/PolicyChecks.h"
 #endif
 #ifdef XP_UNIX
 #  include <unistd.h>
@@ -1797,9 +1798,12 @@ bool nsToolkitProfileService::IsSnapEnvironment() {
  * application versions to different locations, some application sandboxing
  * systems as well as enterprise deployments. This environment variable provides
  * a way to opt out of dedicated profiles for these cases.
+ *
+ * For Windows, we provide a policy to accomplish the same thing.
  */
 bool nsToolkitProfileService::UseLegacyProfiles() {
-  return !!PR_GetEnv("MOZ_LEGACY_PROFILES");
+  return !!PR_GetEnv("MOZ_LEGACY_PROFILES") ||
+         PolicyCheckBoolean(L"LegacyProfiles");
 }
 
 struct FindInstallsClosure {