diff --git a/x-pack/plugins/fleet/server/services/fleet_server_host.ts b/x-pack/plugins/fleet/server/services/fleet_server_host.ts
index 62ceb0a87eea7..156d7e478b02b 100644
--- a/x-pack/plugins/fleet/server/services/fleet_server_host.ts
+++ b/x-pack/plugins/fleet/server/services/fleet_server_host.ts
@@ -48,7 +48,7 @@ export async function createFleetServerHost(
 ): Promise<FleetServerHost> {
   if (data.is_default) {
     const defaultItem = await getDefaultFleetServerHost(soClient);
-    if (defaultItem) {
+    if (defaultItem && defaultItem.id !== options?.id) {
       await updateFleetServerHost(
         soClient,
         defaultItem.id,
diff --git a/x-pack/plugins/fleet/server/services/output.ts b/x-pack/plugins/fleet/server/services/output.ts
index 2cf1764a78f59..f190fc7d2315f 100644
--- a/x-pack/plugins/fleet/server/services/output.ts
+++ b/x-pack/plugins/fleet/server/services/output.ts
@@ -432,7 +432,7 @@ class OutputService {
 
     // ensure only default output exists
     if (data.is_default) {
-      if (defaultDataOutputId) {
+      if (defaultDataOutputId && defaultDataOutputId !== options?.id) {
         await this._updateDefaultOutput(
           soClient,
           defaultDataOutputId,
@@ -443,7 +443,7 @@ class OutputService {
     }
     if (data.is_default_monitoring) {
       const defaultMonitoringOutputId = await this.getDefaultMonitoringOutputId(soClient);
-      if (defaultMonitoringOutputId) {
+      if (defaultMonitoringOutputId && defaultMonitoringOutputId !== options?.id) {
         await this._updateDefaultOutput(
           soClient,
           defaultMonitoringOutputId,
diff --git a/x-pack/test/fleet_api_integration/apis/fleet_server_hosts/crud.ts b/x-pack/test/fleet_api_integration/apis/fleet_server_hosts/crud.ts
index 21bc912dbad29..f17a894f859cc 100644
--- a/x-pack/test/fleet_api_integration/apis/fleet_server_hosts/crud.ts
+++ b/x-pack/test/fleet_api_integration/apis/fleet_server_hosts/crud.ts
@@ -117,5 +117,60 @@ export default function (providerContext: FtrProviderContext) {
           .expect(404);
       });
     });
+
+    describe('POST /fleet_server_hosts', () => {
+      it('should allow to create a default fleet server host with id', async function () {
+        const id = `test-${Date.now()}`;
+
+        await supertest
+          .post(`/api/fleet/fleet_server_hosts`)
+          .set('kbn-xsrf', 'xxxx')
+          .send({
+            name: `Default ${Date.now()}`,
+            host_urls: ['https://test.fr:8080', 'https://test.fr:8081'],
+            is_default: true,
+            id,
+          })
+          .expect(200);
+
+        const {
+          body: { item: fleetServerHost },
+        } = await supertest.get(`/api/fleet/fleet_server_hosts/${id}`).expect(200);
+
+        expect(fleetServerHost.is_default).to.be(true);
+      });
+
+      it('should not unset default fleet server host on id conflict', async function () {
+        const id = `test-${Date.now()}`;
+
+        await supertest
+          .post(`/api/fleet/fleet_server_hosts`)
+          .set('kbn-xsrf', 'xxxx')
+          .send({
+            name: `Default ${Date.now()}`,
+            host_urls: ['https://test.fr:8080', 'https://test.fr:8081'],
+            is_default: true,
+            id,
+          })
+          .expect(200);
+
+        await supertest
+          .post(`/api/fleet/fleet_server_hosts`)
+          .set('kbn-xsrf', 'xxxx')
+          .send({
+            name: `Default ${Date.now()}`,
+            host_urls: ['https://test.fr:8080', 'https://test.fr:8081'],
+            is_default: true,
+            id,
+          })
+          .expect(409);
+
+        const {
+          body: { item: fleetServerHost },
+        } = await supertest.get(`/api/fleet/fleet_server_hosts/${id}`).expect(200);
+
+        expect(fleetServerHost.is_default).to.be(true);
+      });
+    });
   });
 }