Atlassian MCP auth fails in Copilot Desktop with:

[ChandrasekarCK]

Atlassian MCP auth fails in Copilot Desktop with:

Incompatible authorization server: authorization server advertised an issuer that does not match the URL its metadata was discovered from (RFC 8414 §3.3)

Exact error after clicking on sign-in: "Authentication failed

Atlassian: RPC error -32603: Request session.mcp.oauth.login failed with message: Incompatible authorization server: authorization server advertised an issuer that does not match the URL its metadata was discovered from (RFC 8414 §3.3); refusing to connect"

Endpoint: https://mcp.atlassian.com/v1/mcp

Worked previously; started after re-auth prompt.

Repro: Add MCP server → click Sign in → fails immediately.

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Field	Value
App version	1.1.9
OS	Windows 10.0.26200
Theme	GitHub
Path	/chat
Tenure	Day 5 (Week 1)

[steve-dennis-entrust]

This started happening for me too. I think it's an issue on Atlassian's end, their actual URL is https://cf.mcp.atlassian.com/v1/mcp (an additional cloudflare .cf subdomain).

[ChandrasekarCK]

This started happening for me too. I think it's an issue on Atlassian's end, their actual URL is https://cf.mcp.atlassian.com/v1/mcp (an additional cloudflare .cf subdomain).

Copilot suggested that this was something to do with the latest update that was pushed. Not sure what's happening all of a sudden.

[steve-dennis-entrust]

I assumed it was related to the Rovo vulnerability this week. Either way, it's quite the blocker :)

[ChandrasekarCK]

Yes, there is an ongoing bug for this. Many have reported it.
github/copilot-cli#4480