diff --git a/res/css/views/elements/_AccessibleButton.scss b/res/css/views/elements/_AccessibleButton.scss
index fe1f283009..7a1c39d1f6 100644
--- a/res/css/views/elements/_AccessibleButton.scss
+++ b/res/css/views/elements/_AccessibleButton.scss
@@ -79,3 +79,22 @@ limitations under the License.
     color: $button-danger-disabled-fg-color;
     background-color: $button-danger-disabled-bg-color;
 }
+
+.mx_AccessibleButton_kind_link {
+    color: $button-link-fg-color;
+    background-color: $button-link-bg-color;
+}
+
+.mx_AccessibleButton_kind_link.mx_AccessibleButton_disabled {
+    opacity: 0.4;
+}
+
+.mx_AccessibleButton_hasKind.mx_AccessibleButton_kind_link_sm {
+    padding: 5px 12px;
+    color: $button-link-fg-color;
+    background-color: $button-link-bg-color;
+}
+
+.mx_AccessibleButton_kind_link_sm.mx_AccessibleButton_disabled {
+    opacity: 0.4;
+}
diff --git a/res/themes/dark/css/_dark.scss b/res/themes/dark/css/_dark.scss
index f2bfe5bc8a..fc3da7bb0a 100644
--- a/res/themes/dark/css/_dark.scss
+++ b/res/themes/dark/css/_dark.scss
@@ -143,6 +143,8 @@ $button-danger-fg-color: #ffffff;
 $button-danger-bg-color: $notice-primary-color;
 $button-danger-disabled-fg-color: #ffffff;
 $button-danger-disabled-bg-color: #f5b6bb; // TODO: Verify color
+$button-link-fg-color: $accent-color;
+$button-link-bg-color: transparent;
 
 $room-warning-bg-color: $header-panel-bg-color;
 
diff --git a/res/themes/light/css/_light.scss b/res/themes/light/css/_light.scss
index 447516a26b..d8d4b0a11b 100644
--- a/res/themes/light/css/_light.scss
+++ b/res/themes/light/css/_light.scss
@@ -244,6 +244,8 @@ $button-danger-fg-color: #ffffff;
 $button-danger-bg-color: $notice-primary-color;
 $button-danger-disabled-fg-color: #ffffff;
 $button-danger-disabled-bg-color: #f5b6bb; // TODO: Verify color
+$button-link-fg-color: $accent-color;
+$button-link-bg-color: transparent;
 
 // Toggle switch
 $togglesw-off-color: #c1c9d6;
diff --git a/src/Lifecycle.js b/src/Lifecycle.js
index 1b76c61071..e3c4d39242 100644
--- a/src/Lifecycle.js
+++ b/src/Lifecycle.js
@@ -340,6 +340,25 @@ export function setLoggedIn(credentials) {
     return _doSetLoggedIn(credentials, true);
 }
 
+/**
+ * Hydrates an existing session by using the credentials provided. This will
+ * not clear any local storage, unlike setLoggedIn().
+ *
+ * Stops the existing Matrix client (without clearing its data) and starts a
+ * new one in its place. This additionally starts all other react-sdk services
+ * which use the new Matrix client.
+ *
+ * @param {MatrixClientCreds} credentials The credentials to use
+ *
+ * @returns {Promise} promise which resolves to the new MatrixClient once it has been started
+ */
+export function hydrateSession(credentials) {
+    stopMatrixClient();
+    localStorage.removeItem("mx_soft_logout");
+    _isLoggingOut = false;
+    return _doSetLoggedIn(credentials, false);
+}
+
 /**
  * fires on_logging_in, optionally clears localstorage, persists new credentials
  * to localstorage, starts the new client.
@@ -541,6 +560,7 @@ async function startMatrixClient(startSyncing=true) {
         await MatrixClientPeg.start();
     } else {
         console.warn("Caller requested only auxiliary services be started");
+        await MatrixClientPeg.assign();
     }
 
     // dispatch that we finished starting up to wire up any other bits
diff --git a/src/MatrixClientPeg.js b/src/MatrixClientPeg.js
index 07499a3a87..ca75b68e57 100644
--- a/src/MatrixClientPeg.js
+++ b/src/MatrixClientPeg.js
@@ -120,7 +120,7 @@ class MatrixClientPeg {
         this._createClient(creds);
     }
 
-    async start() {
+    async assign() {
         for (const dbType of ['indexeddb', 'memory']) {
             try {
                 const promise = this.matrixClient.store.startup();
@@ -131,7 +131,7 @@ class MatrixClientPeg {
                 if (dbType === 'indexeddb') {
                     console.error('Error starting matrixclient store - falling back to memory store', err);
                     this.matrixClient.store = new Matrix.MemoryStore({
-                      localStorage: global.localStorage,
+                        localStorage: global.localStorage,
                     });
                 } else {
                     console.error('Failed to start memory store!', err);
@@ -172,6 +172,12 @@ class MatrixClientPeg {
         MatrixActionCreators.start(this.matrixClient);
         MatrixClientBackedSettingsHandler.matrixClient = this.matrixClient;
 
+        return opts;
+    }
+
+    async start() {
+        const opts = await this.assign();
+
         console.log(`MatrixClientPeg: really starting MatrixClient`);
         await this.get().startClient(opts);
         console.log(`MatrixClientPeg: MatrixClient started`);
diff --git a/src/components/structures/MatrixChat.js b/src/components/structures/MatrixChat.js
index a6965e06ca..a93492cd41 100644
--- a/src/components/structures/MatrixChat.js
+++ b/src/components/structures/MatrixChat.js
@@ -450,6 +450,10 @@ export default React.createClass({
                 startAnyRegistrationFlow(payload);
                 break;
             case 'start_registration':
+                if (Lifecycle.isSoftLogout()) {
+                    this._onSoftLogout();
+                    break;
+                }
                 // This starts the full registration flow
                 if (payload.screenAfterLogin) {
                     this._screenAfterLogin = payload.screenAfterLogin;
@@ -457,6 +461,10 @@ export default React.createClass({
                 this._startRegistration(payload.params || {});
                 break;
             case 'start_login':
+                if (Lifecycle.isSoftLogout()) {
+                    this._onSoftLogout();
+                    break;
+                }
                 if (payload.screenAfterLogin) {
                     this._screenAfterLogin = payload.screenAfterLogin;
                 }
diff --git a/src/components/structures/auth/SoftLogout.js b/src/components/structures/auth/SoftLogout.js
index 85654d512a..e01be3c1f0 100644
--- a/src/components/structures/auth/SoftLogout.js
+++ b/src/components/structures/auth/SoftLogout.js
@@ -23,6 +23,21 @@ import Modal from '../../../Modal';
 import {ValidatedServerConfig} from "../../../utils/AutoDiscoveryUtils";
 import SdkConfig from "../../../SdkConfig";
 import MatrixClientPeg from "../../../MatrixClientPeg";
+import {sendLoginRequest} from "../../../Login";
+
+const LOGIN_VIEW = {
+    LOADING: 1,
+    PASSWORD: 2,
+    CAS: 3, // SSO, but old
+    SSO: 4,
+    UNSUPPORTED: 5,
+};
+
+const FLOWS_TO_VIEWS = {
+    "m.login.password": LOGIN_VIEW.PASSWORD,
+    "m.login.cas": LOGIN_VIEW.CAS,
+    "m.login.sso": LOGIN_VIEW.SSO,
+};
 
 export default class SoftLogout extends React.Component {
     static propTypes = {
@@ -48,7 +63,14 @@ export default class SoftLogout extends React.Component {
             domainName,
             userId,
             displayName,
+            loginView: LOGIN_VIEW.LOADING,
+
+            busy: false,
+            password: "",
+            errorText: "",
         };
+
+        this._initLogin();
     }
 
     onClearAll = () => {
@@ -63,10 +85,122 @@ export default class SoftLogout extends React.Component {
         });
     };
 
-    onLogin = () => {
-        dis.dispatch({action: 'start_login'});
+    async _initLogin() {
+        // Note: we don't use the existing Login class because it is heavily flow-based. We don't
+        // care about login flows here, unless it is the single flow we support.
+        const client = MatrixClientPeg.get();
+        const loginViews = (await client.loginFlows()).flows.map(f => FLOWS_TO_VIEWS[f.type]);
+
+        const chosenView = loginViews.filter(f => !!f)[0] || LOGIN_VIEW.UNSUPPORTED;
+        this.setState({loginView: chosenView});
+    }
+
+    onPasswordChange = (ev) => {
+        this.setState({password: ev.target.value});
     };
 
+    onForgotPassword = () => {
+        dis.dispatch({action: 'start_password_recovery'});
+    };
+
+    onPasswordLogin = async (ev) => {
+        ev.preventDefault();
+        ev.stopPropagation();
+
+        this.setState({busy: true});
+
+        const hsUrl = MatrixClientPeg.get().getHomeserverUrl();
+        const isUrl = MatrixClientPeg.get().getIdentityServerUrl();
+        const loginType = "m.login.password";
+        const loginParams = {
+            identifier: {
+                type: "m.id.user",
+                user: MatrixClientPeg.get().getUserId(),
+            },
+            password: this.state.password,
+            device_id: MatrixClientPeg.get().getDeviceId(),
+        };
+
+        let credentials = null;
+        try {
+            credentials = await sendLoginRequest(hsUrl, isUrl, loginType, loginParams);
+        } catch (e) {
+            let errorText = _t("Failed to re-authenticate due to a homeserver problem");
+            if (e.errcode === "M_FORBIDDEN" && (e.httpStatus === 401 || e.httpStatus === 403)) {
+                errorText = _t("Incorrect password");
+            }
+
+            this.setState({
+                busy: false,
+                errorText: errorText,
+            });
+            return;
+        }
+
+        Lifecycle.hydrateSession(credentials).catch((e) => {
+            console.error(e);
+            this.setState({busy: false, errorText: _t("Failed to re-authenticate")});
+        });
+    };
+
+    _renderSignInSection() {
+        if (this.state.loginView === LOGIN_VIEW.LOADING) {
+            const Spinner = sdk.getComponent("elements.Spinner");
+            return <Spinner />;
+        }
+
+        if (this.state.loginView === LOGIN_VIEW.PASSWORD) {
+            const Field = sdk.getComponent("elements.Field");
+            const AccessibleButton = sdk.getComponent('elements.AccessibleButton');
+
+            let error = null;
+            if (this.state.errorText) {
+                error = <span className='mx_Login_error'>{this.state.errorText}</span>;
+            }
+
+            return (
+                <form onSubmit={this.onPasswordLogin}>
+                    <p>{_t("Enter your password to sign in and regain access to your account.")}</p>
+                    {error}
+                    <Field
+                        id="softlogout_password"
+                        type="password"
+                        label={_t("Password")}
+                        onChange={this.onPasswordChange}
+                        value={this.state.password}
+                        disabled={this.state.busy}
+                    />
+                    <AccessibleButton
+                        onClick={this.onPasswordLogin}
+                        kind="primary"
+                        type="submit"
+                        disabled={this.state.busy}
+                    >
+                        {_t("Sign In")}
+                    </AccessibleButton>
+                    <AccessibleButton onClick={this.onForgotPassword} kind="link">
+                        {_t("Forgotten your password?")}
+                    </AccessibleButton>
+                </form>
+            );
+        }
+
+        if (this.state.loginView === LOGIN_VIEW.SSO || this.state.loginView === LOGIN_VIEW.CAS) {
+            // TODO: TravisR - https://github.com/vector-im/riot-web/issues/10238
+            return <p>PLACEHOLDER</p>;
+        }
+
+        // Default: assume unsupported
+        return (
+            <p>
+                {_t(
+                    "Cannot re-authenticate with your account. Please contact your " +
+                    "homeserver admin for more information.",
+                )}
+            </p>
+        );
+    }
+
     render() {
         const AuthPage = sdk.getComponent("auth.AuthPage");
         const AuthHeader = sdk.getComponent("auth.AuthHeader");
@@ -107,14 +241,7 @@ export default class SoftLogout extends React.Component {
 
                     <h3>{_t("Sign in")}</h3>
                     <div>
-                        {_t(
-                            "Sign in again to regain access to your account, or a different one.",
-                        )}
-                    </div>
-                    <div>
-                        <AccessibleButton onClick={this.onLogin} kind="primary">
-                            {_t("Sign in")}
-                        </AccessibleButton>
+                        {this._renderSignInSection()}
                     </div>
                 </AuthBody>
             </AuthPage>
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index a8febdf2e4..74f693cd3c 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -1586,12 +1586,15 @@
     "You can now close this window or <a>log in</a> to your new account.": "You can now close this window or <a>log in</a> to your new account.",
     "Registration Successful": "Registration Successful",
     "Create your account": "Create your account",
+    "Failed to re-authenticate": "Failed to re-authenticate",
+    "Enter your password to sign in and regain access to your account.": "Enter your password to sign in and regain access to your account.",
+    "Forgotten your password?": "Forgotten your password?",
+    "Cannot re-authenticate with your account. Please contact your homeserver admin for more information.": "Cannot re-authenticate with your account. Please contact your homeserver admin for more information.",
     "You're signed out": "You're signed out",
     "Your homeserver (%(domainName)s) admin has signed you out of your account %(displayName)s (%(userId)s).": "Your homeserver (%(domainName)s) admin has signed you out of your account %(displayName)s (%(userId)s).",
     "I don't want to sign in": "I don't want to sign in",
     "If this is a shared device, or you don't want to access your account again from it, clear all data stored locally on this device.": "If this is a shared device, or you don't want to access your account again from it, clear all data stored locally on this device.",
     "Clear all data": "Clear all data",
-    "Sign in again to regain access to your account, or a different one.": "Sign in again to regain access to your account, or a different one.",
     "Commands": "Commands",
     "Results from DuckDuckGo": "Results from DuckDuckGo",
     "Emoji": "Emoji",