# X_TEST_LIVE_NODE_UPGRADE_REFUSED

## Means

the in-process sync node refused the connection

## Typical cause

the `subscribe` fixture's node answered the upgrade with a response instead of taking it — its accept budget, its connection ceiling, or a node that was never started. A different failure from having nothing to serve, which is the row below

## Fix

`await node.start()` before `connect()`, and keep the request path at `/_x/sync`

[Testing](/error-codes#testing)