diff --git a/common/changes/searchbox_fixes_2017-04-24-09-53.json b/common/changes/searchbox_fixes_2017-04-24-09-53.json
new file mode 100644
index 00000000000000..7544256b71079e
--- /dev/null
+++ b/common/changes/searchbox_fixes_2017-04-24-09-53.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Searchbox: IE11 keystroke miss, overflow fix",
+      "type": "patch"
+    }
+  ],
+  "email": "manishda@microsoft.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.scss b/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.scss
index 355cb79d975d39..74eff0319c7363 100644
--- a/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.scss
+++ b/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.scss
@@ -49,7 +49,7 @@
   font-size: inherit;
   color: $ms-color-black;
   background-color: transparent;
-  flex-grow: 1;
+  flex: 1 1 0;
   overflow: hidden;
   text-overflow: ellipsis;
   // This padding forces the text placement to round up.
diff --git a/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.tsx b/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.tsx
index 3788c9ee3c5fa6..ed602dcc579451 100644
--- a/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.tsx
+++ b/packages/office-ui-fabric-react/src/components/SearchBox/SearchBox.tsx
@@ -26,6 +26,7 @@ export class SearchBox extends BaseComponent<ISearchBoxProps, ISearchBoxState> {
 
   private _rootElement: HTMLElement;
   private _inputElement: HTMLInputElement;
+  private _latestValue: string;
 
   public constructor(props: ISearchBoxProps) {
     super(props);
@@ -39,6 +40,7 @@ export class SearchBox extends BaseComponent<ISearchBoxProps, ISearchBoxState> {
 
   public componentWillReceiveProps(newProps: ISearchBoxProps) {
     if (newProps.value !== undefined) {
+      this._latestValue = newProps.value;
       this.setState({
         value: newProps.value
       });
@@ -67,6 +69,7 @@ export class SearchBox extends BaseComponent<ISearchBoxProps, ISearchBoxState> {
           className={ css('ms-SearchBox-field', styles.field) }
           placeholder={ labelText }
           onChange={ this._onInputChange }
+          onInput={ this._onInputChange }
           onKeyDown={ this._onKeyDown }
           value={ value }
           ref={ this._resolveRef('_inputElement') }
@@ -136,10 +139,14 @@ export class SearchBox extends BaseComponent<ISearchBoxProps, ISearchBoxState> {
 
   @autobind
   private _onInputChange(ev: React.ChangeEvent<HTMLInputElement>) {
-    this.setState({
-      value: this._inputElement.value
-    });
-    this._callOnChange(this._inputElement.value);
+    const value = this._inputElement.value;
+    if (value === this._latestValue) {
+      return;
+    }
+    this._latestValue = value;
+
+    this.setState({ value });
+    this._callOnChange(value);
   }
 
   private _handleDocumentFocus(ev: FocusEvent) {