diff --git a/cypress/e2e/login/login.spec.ts b/cypress/e2e/login/login.spec.ts
index 1058287010..32a3babced 100644
--- a/cypress/e2e/login/login.spec.ts
+++ b/cypress/e2e/login/login.spec.ts
@@ -21,6 +21,10 @@ import { SynapseInstance } from "../../plugins/synapsedocker";
 describe("Login", () => {
     let synapse: SynapseInstance;
 
+    beforeEach(() => {
+        cy.stubDefaultServer();
+    });
+
     afterEach(() => {
         cy.stopSynapse(synapse);
     });
diff --git a/cypress/e2e/register/register.spec.ts b/cypress/e2e/register/register.spec.ts
index 98ef2bd729..dacfe08bf8 100644
--- a/cypress/e2e/register/register.spec.ts
+++ b/cypress/e2e/register/register.spec.ts
@@ -22,6 +22,7 @@ describe("Registration", () => {
     let synapse: SynapseInstance;
 
     beforeEach(() => {
+        cy.stubDefaultServer();
         cy.visit("/#/register");
         cy.startSynapse("consent").then(data => {
             synapse = data;
diff --git a/cypress/fixtures/matrix-org-client-login.json b/cypress/fixtures/matrix-org-client-login.json
new file mode 100644
index 0000000000..d7c4fde1e5
--- /dev/null
+++ b/cypress/fixtures/matrix-org-client-login.json
@@ -0,0 +1,48 @@
+{
+    "flows": [
+        {
+            "type": "m.login.sso",
+            "identity_providers": [
+                {
+                    "id": "oidc-github",
+                    "name": "GitHub",
+                    "icon": "mxc://matrix.org/sVesTtrFDTpXRbYfpahuJsKP",
+                    "brand": "github"
+                },
+                {
+                    "id": "oidc-google",
+                    "name": "Google",
+                    "icon": "mxc://matrix.org/ZlnaaZNPxtUuQemvgQzlOlkz",
+                    "brand": "google"
+                },
+                {
+                    "id": "oidc-gitlab",
+                    "name": "GitLab",
+                    "icon": "mxc://matrix.org/MCVOEmFgVieKFshPxmnejWOq",
+                    "brand": "gitlab"
+                },
+                {
+                    "id": "oidc-facebook",
+                    "name": "Facebook",
+                    "icon": "mxc://matrix.org/nsyeLIgzxazZmJadflMAsAWG",
+                    "brand": "facebook"
+                },
+                {
+                    "id": "oidc-apple",
+                    "name": "Apple",
+                    "icon": "mxc://matrix.org/QQKNSOdLiMHtJhzeAObmkFiU",
+                    "brand": "apple"
+                }
+            ]
+        },
+        {
+            "type": "m.login.token"
+        },
+        {
+            "type": "m.login.password"
+        },
+        {
+            "type": "m.login.application_service"
+        }
+    ]
+}
diff --git a/cypress/fixtures/matrix-org-client-versions.json b/cypress/fixtures/matrix-org-client-versions.json
new file mode 100644
index 0000000000..0e0cfae33d
--- /dev/null
+++ b/cypress/fixtures/matrix-org-client-versions.json
@@ -0,0 +1,39 @@
+{
+            "versions": [
+                "r0.0.1",
+                "r0.1.0",
+                "r0.2.0",
+                "r0.3.0",
+                "r0.4.0",
+                "r0.5.0",
+                "r0.6.0",
+                "r0.6.1",
+                "v1.1",
+                "v1.2",
+                "v1.3",
+                "v1.4"
+            ],
+            "unstable_features": {
+                "org.matrix.label_based_filtering": true,
+                "org.matrix.e2e_cross_signing": true,
+                "org.matrix.msc2432": true,
+                "uk.half-shot.msc2666.mutual_rooms": true,
+                "io.element.e2ee_forced.public": false,
+                "io.element.e2ee_forced.private": false,
+                "io.element.e2ee_forced.trusted_private": false,
+                "org.matrix.msc3026.busy_presence": false,
+                "org.matrix.msc2285.stable": true,
+                "org.matrix.msc3827.stable": true,
+                "org.matrix.msc2716": false,
+                "org.matrix.msc3030": false,
+                "org.matrix.msc3440.stable": true,
+                "org.matrix.msc3771": true,
+                "org.matrix.msc3773": false,
+                "fi.mau.msc2815": false,
+                "org.matrix.msc3882": false,
+                "org.matrix.msc3881": false,
+                "org.matrix.msc3874": false,
+                "org.matrix.msc3886": false,
+                "org.matrix.msc3912": false
+            }
+        }
diff --git a/cypress/fixtures/matrix-org-client-well-known.json b/cypress/fixtures/matrix-org-client-well-known.json
new file mode 100644
index 0000000000..ed726e2421
--- /dev/null
+++ b/cypress/fixtures/matrix-org-client-well-known.json
@@ -0,0 +1,8 @@
+{
+    "m.homeserver": {
+        "base_url": "https://matrix-client.matrix.org"
+    },
+    "m.identity_server": {
+        "base_url": "https://vector.im"
+    }
+}
diff --git a/cypress/fixtures/vector-im-identity-v1.json b/cypress/fixtures/vector-im-identity-v1.json
new file mode 100644
index 0000000000..0967ef424b
--- /dev/null
+++ b/cypress/fixtures/vector-im-identity-v1.json
@@ -0,0 +1 @@
+{}
diff --git a/cypress/support/network.ts b/cypress/support/network.ts
index 73df049c6c..238c847184 100644
--- a/cypress/support/network.ts
+++ b/cypress/support/network.ts
@@ -20,10 +20,12 @@ declare global {
     // eslint-disable-next-line @typescript-eslint/no-namespace
     namespace Cypress {
         interface Chainable {
-            // Intercept all /_matrix/ networking requests for the logged in user and fail them
+            // Intercept all /_matrix/ networking requests for the logged-in user and fail them
             goOffline(): void;
             // Remove intercept on all /_matrix/ networking requests
             goOnline(): void;
+            // Intercept calls to vector.im/matrix.org so a login page can be shown offline
+            stubDefaultServer(): void;
         }
     }
 }
@@ -58,5 +60,29 @@ Cypress.Commands.add("goOnline", (): void => {
     });
 });
 
+Cypress.Commands.add("stubDefaultServer", (): void => {
+    cy.log("Stubbing vector.im and matrix.org network calls");
+    // We intercept vector.im & matrix.org calls so that tests don't fail when it has issues
+    cy.intercept("GET", "https://vector.im/_matrix/identity/api/v1", {
+        fixture: "vector-im-identity-v1.json",
+    });
+    cy.intercept("GET", "https://matrix.org/.well-known/matrix/client", {
+        fixture: "matrix-org-client-well-known.json",
+    });
+    cy.intercept("GET", "https://matrix-client.matrix.org/_matrix/client/versions", {
+        fixture: "matrix-org-client-versions.json",
+    });
+    cy.intercept("GET", "https://matrix-client.matrix.org/_matrix/client/r0/login", {
+        fixture: "matrix-org-client-login.json",
+    });
+    cy.intercept("POST", "https://matrix-client.matrix.org/_matrix/client/r0/register?kind=guest", {
+        statusCode: 403,
+        body: {
+            errcode: "M_FORBIDDEN",
+            error: "Registration is not enabled on this homeserver.",
+        },
+    });
+});
+
 // Needed to make this file a module
 export { };