MCP server URL or name
mcp.notion.com
How are you connecting to this server?
From browsing the MCP server directory
Where does the issue occur?
In the authorization screen
When did you last reproduce this?
2026-04-15 3AM PHT
Browser and OS
Chrome, Mac OS and Windows
Describe the issue
Hey! Not sure if this is a known issue but my Notion MCP connection is completely broken and I can't get it back.
Basically I was trying to use Claude to pull a meeting summary from Notion but it couldn't connect, so I disconnected and tried to reconnect, and now every time I go through the OAuth flow I just get a blank page that says "Internal Server Error" at mcp.notion.com/callback.
I've tried everything I can think of Chrome, Safari, Brave, Incognito, a totally different Windows machine, my phone, cleared cookies, logged in and out of Claude. Same error every single time across all of them but when I asked my team, they didn't have any problems with Notion MCP. It suddenly stopped working yesterday. All my other connectors are working fine except this.
If anyone knows other ways to troubleshoot this, I'd really appreciate that.
Error details
Internal Server Error. Invalid MCP state. Please enable browser cookies and try again.
Expected behavior
For Notion to reconnect.
Additional context
No response
MCP server URL or name
mcp.notion.com
How are you connecting to this server?
From browsing the MCP server directory
Where does the issue occur?
In the authorization screen
When did you last reproduce this?
2026-04-15 3AM PHT
Browser and OS
Chrome, Mac OS and Windows
Describe the issue
Hey! Not sure if this is a known issue but my Notion MCP connection is completely broken and I can't get it back.
Basically I was trying to use Claude to pull a meeting summary from Notion but it couldn't connect, so I disconnected and tried to reconnect, and now every time I go through the OAuth flow I just get a blank page that says "Internal Server Error" at mcp.notion.com/callback.
I've tried everything I can think of Chrome, Safari, Brave, Incognito, a totally different Windows machine, my phone, cleared cookies, logged in and out of Claude. Same error every single time across all of them but when I asked my team, they didn't have any problems with Notion MCP. It suddenly stopped working yesterday. All my other connectors are working fine except this.
If anyone knows other ways to troubleshoot this, I'd really appreciate that.
Error details
Internal Server Error. Invalid MCP state. Please enable browser cookies and try again.Expected behavior
For Notion to reconnect.
Additional context
No response