A 598 Network Read Timeout Error is an informal proxy-specific code for: "The network proxy timed out while waiting for data from the upstream server.".

How do I fix or troubleshoot a 598 Error?

Common steps include reloading the page in your browser, checking for typos in the URL, verifying server status, clearing browser cache or cookies, and contacting the website owner or server administrator if the error persists.

598 Error | Error-Message.Net

A 598 Network Read Timeout Error is an informal status code used by some network proxies and Microsoft caching gateways.

It indicates that the proxy server encountered a read timeout while waiting for a response from the destination web server behind the gateway.

Determining why

The proxy established a network connection, but when reading data packets from the destination server, the data transfer stalled and exceeded the proxy’s read timeout limit.

Steps you could possibly take:

Reload the page - Re-request the page to see if network congestion cleared.
Bypass local proxy - If using an enterprise or school proxy, test from an unproxied connection or cellular data.
If you are the network administrator - Inspect proxy gateway logs and verify network latency to the target server.

Source: RFC 9110 (HTTP Semantics - Informational Codes)