diff --git a/app/src/assets/scss/component/_button.scss b/app/src/assets/scss/component/_button.scss
index 73d4e5d1d..557b9c312 100644
--- a/app/src/assets/scss/component/_button.scss
+++ b/app/src/assets/scss/component/_button.scss
@@ -49,11 +49,6 @@
     }
   }
 
-  &--small {
-    padding: 0 4px;
-    font-size: 12px;
-  }
-
   &--mid {
     padding: 2px 8px;
   }
@@ -164,6 +159,11 @@
     background-color: var(--b3-card-success-background);
   }
 
+  &--small {
+    padding: 0 4px;
+    font-size: 12px;
+  }
+
   &:disabled {
     opacity: .38;
     cursor: not-allowed;
diff --git a/app/src/protyle/ui/initUI.ts b/app/src/protyle/ui/initUI.ts
index bd31b9987..cacfb0835 100644
--- a/app/src/protyle/ui/initUI.ts
+++ b/app/src/protyle/ui/initUI.ts
@@ -80,7 +80,7 @@ export const initUI = (protyle: IProtyle) => {
         setInlineStyle();
         clearTimeout(wheelTimeout);
         showMessage(`${window.siyuan.languages.fontSize} ${window.siyuan.config.editor.fontSize}px<span class="fn__space"></span>
-<button class="b3-button b3-button--small b3-button--white">${window.siyuan.languages.reset} 16px</button>`, undefined, undefined, wheelId);
+<button class="b3-button b3-button--white">${window.siyuan.languages.reset} 16px</button>`, undefined, undefined, wheelId);
         wheelTimeout = window.setTimeout(() => {
             fetchPost("/api/setting/setEditor", window.siyuan.config.editor);
             protyle.wysiwyg.element.querySelectorAll(".code-block .protyle-linenumber__rows").forEach((block: HTMLElement) => {
diff --git a/app/src/util/processMessage.ts b/app/src/util/processMessage.ts
index 6093d553f..111cabd3f 100644
--- a/app/src/util/processMessage.ts
+++ b/app/src/util/processMessage.ts
@@ -4,10 +4,16 @@ import {exportLayout} from "../layout/util";
 import {hideMessage, showMessage} from "../dialog/message";
 import {setStorageVal} from "../protyle/util/compatibility";
 import {Constants} from "../constants";
+import {fetchPost} from "./fetch";
 
 export const processMessage = (response: IWebSocketData) => {
     if ("msg" === response.cmd) {
         showMessage(response.msg, response.data.closeTimeout, response.code === 0 ? "info" : "error", response.data.id);
+        document.querySelector("#message #addMicrosoftDefenderExclusion")?.addEventListener("click", (event) => {
+            fetchPost("/api/system/addMicrosoftDefenderExclusion", {}, (response) => {
+                (event.target as HTMLElement).innerHTML = '<svg class="fn__rotate" style="margin-right: 0;"><use xlink:href="#iconRefresh"></use></svg>';
+            });
+        }, {once: true});
         return false;
     }
     if ("cmsg" === response.cmd) {