diff --git a/server/lib/idp/idpExistsForOrg.ts b/server/lib/idp/idpExistsForOrg.ts
index 52530e7ba..772e69bcf 100644
--- a/server/lib/idp/idpExistsForOrg.ts
+++ b/server/lib/idp/idpExistsForOrg.ts
@@ -1,8 +1,9 @@
 import { db, idp, idpOrg, Transaction } from "@server/db";
 import { and, eq } from "drizzle-orm";
+import { build } from "@server/build";
 
 export function isOrgIdentityProviderMode(): boolean {
-    return process.env.IDENTITY_PROVIDER_MODE === "org";
+    return build === "saas" || process.env.IDENTITY_PROVIDER_MODE === "org";
 }
 
 /**
diff --git a/server/routers/user/createOrgUser.ts b/server/routers/user/createOrgUser.ts
index d80d85999..ea02884fd 100644
--- a/server/routers/user/createOrgUser.ts
+++ b/server/routers/user/createOrgUser.ts
@@ -20,6 +20,7 @@ import { TierFeature, tierMatrix } from "@server/lib/billing/tierMatrix";
 import { assignUserToOrg } from "@server/lib/userOrg";
 import { isLicensedOrSubscribed } from "#dynamic/lib/isLicencedOrSubscribed";
 import { isOrgRebuildRateLimited } from "@server/lib/rebuildClientAssociations";
+import { idpExistsForOrg } from "@server/lib/idp/idpExistsForOrg";
 
 const paramsSchema = z.strictObject({
     orgId: z.string().nonempty()
@@ -239,6 +240,16 @@ export async function createOrgUser(
                 );
             }
 
+            const providerExists = await idpExistsForOrg(idpId, orgId);
+            if (!providerExists) {
+                return next(
+                    createHttpError(
+                        HttpCode.BAD_REQUEST,
+                        "Identity provider not found in this organization"
+                    )
+                );
+            }
+
             const [idpRes] = await db
                 .select()
                 .from(idp)
diff --git a/src/app/[orgId]/settings/access/users/create/page.tsx b/src/app/[orgId]/settings/access/users/create/page.tsx
index cafbca55f..4f6a2b974 100644
--- a/src/app/[orgId]/settings/access/users/create/page.tsx
+++ b/src/app/[orgId]/settings/access/users/create/page.tsx
@@ -237,10 +237,13 @@ export default function Page() {
                 return;
             }
 
+            const useOrgIdps =
+                build === "saas" || env.app.identityProviderMode === "org";
+
             const res = await api
                 .get<
                     AxiosResponse<ListIdpsResponse>
-                >(build === "saas" ? `/org/${orgId}/idp` : "/idp")
+                >(useOrgIdps ? `/org/${orgId}/idp` : "/idp")
                 .catch((e) => {
                     console.error(e);
                     toast({
@@ -301,8 +304,7 @@ export default function Page() {
     );
     const [isSubmittingExternal, setIsSubmittingExternal] = useState(false);
 
-    const loading =
-        isSubmittingInternal || isSubmittingExternal;
+    const loading = isSubmittingInternal || isSubmittingExternal;
 
     async function onSubmitInternal() {
         const isValid = await internalForm.trigger();