How to Fix Notion ‘Comment Cannot Be Posted’ Error

When you try to add a comment in Notion, you might see the error message “Comment Cannot Be Posted.” This error usually occurs because of a temporary network glitch, a browser extension conflict, or a permission restriction on the page or database. The comment fails to send, and you cannot leave feedback or discuss content with your team. This article explains the root causes of this error and provides step-by-step fixes to resolve it quickly. You will also learn about related issues and how to prevent them in the future.

Why the “Comment Cannot Be Posted” Error Appears

Notion comments rely on a real-time connection between your browser and Notion’s servers. When you type a comment and press Enter, Notion sends a POST request to its API. If that request fails, the error appears. The failure can happen for several reasons.

The most common cause is a temporary network interruption. Your internet connection may drop for a split second, or a VPN or proxy may interfere with the request. Another frequent cause is a browser extension that blocks scripts or third-party content. Ad blockers, privacy extensions, and script managers can prevent Notion from sending the comment. Finally, permission settings can block comments. If you have “Can view” or “Can comment” access on a page, you can view and add comments. But if the page owner removed comment permissions for your role, or if the page is locked, the error may appear.

In rare cases, the error is caused by a corrupted browser cache or a bug in the Notion desktop app. The fixes below address all these causes.

Steps to Resolve the Comment Posting Error

Follow these steps in order. Test after each step to see if the error is gone.

1. Refresh the page
   Press F5 on Windows or Cmd+R on Mac. This reloads the page and clears any temporary state that may be blocking the comment. If the error was caused by a one-time glitch, the comment should post now.
2. Check your internet connection
   Open another website in the same browser. If that site does not load, restart your router or switch to a different network. Notion requires a stable connection to post comments.
3. Disable browser extensions one by one
   In Chrome, click the puzzle icon in the top-right corner. Click Manage Extensions. Toggle off each extension, then try posting a comment. If the error disappears after disabling a specific extension, that extension is the cause. Keep it off while using Notion, or add an exception for the Notion domain in the extension’s settings.
4. Clear browser cache and cookies
   In Chrome, press Ctrl+Shift+Delete. Select Cached images and files and Cookies and other site data. Choose All time from the time range. Click Clear data. Reload Notion and try again. A corrupted cache can cause API failures.
5. Try a different browser
   Open Notion in Microsoft Edge, Firefox, or another browser. If the comment posts there, the original browser has a persistent issue. Reset that browser to default settings or reinstall it.
6. Use incognito or private mode
   Open a private window (Ctrl+Shift+N in Chrome). Log into Notion and try to comment. Private mode disables most extensions. If the comment works, an extension or cached data is the problem.
7. Check page permissions
   Click Share in the top-right corner of the page. Look at your name in the list. You need at least Can edit permission to post comments. If you see Can view or Can comment, ask the page owner to change your permission to Can edit. Also check if the page is locked by looking for a lock icon in the top bar. If locked, click the lock icon to unlock it if you have permission.
8. Restart the Notion desktop app
   If you use the Notion desktop app, close it completely. On Windows, right-click the Notion icon in the system tray and select Quit. On Mac, press Cmd+Q. Open the app again and try to comment.
9. Disable VPN or proxy
   Temporarily turn off your VPN or proxy service. Try posting the comment. If it works, your VPN may be blocking Notion’s API. Add Notion to the VPN’s split-tunnel or whitelist.

If Notion Still Shows the Error After the Main Fix

Comment box is grayed out or unresponsive

If the comment input area is gray and you cannot type, the page is likely locked. Look for a lock icon in the top bar of the page. Click it to unlock the page if you have edit permissions. If you do not see a lock icon, ask the workspace owner to unlock it.

Error appears only on mobile app

On the Notion mobile app, force close the app and reopen it. On iOS, swipe up from the bottom and swipe the Notion card away. On Android, go to Settings > Apps > Notion > Force stop. Open the app again. If the error persists, uninstall and reinstall the app.

Error appears for all users on a workspace

This indicates a server-side issue or a workspace setting. Go to Settings & Members > Settings > Workspace. Scroll to Commenting. Ensure Allow commenting is toggled on. If it is off, toggle it on. If the error continues, contact Notion support at www.notion.so/help.

Notion Comment Permissions vs Browser Causes: Comparison

Item	Permission Issue	Browser Issue
Error message	“Comment Cannot Be Posted” or “You do not have permission to comment”	“Comment Cannot Be Posted” with no permission warning
Primary cause	Page is locked or your role is “Can view” or “Can comment”	Extension blocks API, cache corruption, or network glitch
Fix	Ask for edit access or unlock the page	Disable extensions, clear cache, or use incognito mode
Affects	One page or database	All pages in that browser or app instance

Now you can resolve the “Comment Cannot Be Posted” error in Notion by checking your permissions, clearing browser data, or disabling extensions. Next time you encounter this issue, start with a page refresh and test in incognito mode. If you manage a workspace, ensure commenting is enabled in workspace settings and that page locks are used intentionally. For persistent errors, use the Notion desktop app instead of the browser to avoid extension conflicts.