What is the name of the domain?
example.com
What is the error message?
ERR_QUIC_PROTOCOL_ERROR
What is the issue you’re encountering
When using a cloudflare proxy, users in a specific geographic region receive ERR_QUIC_PROTOCOL_ERROR
What steps have you taken to resolve the issue?
Turned off proxy for domains(set dns only)
What feature, service or problem is this related to?
DNS records
What are the steps to reproduce the issue?
Turn on proxy by Cloudflare for domain
fritex
2
Wonder if that error you’re experiencing is related to the recent change in the content compression type zstd? 
Zstd has been out a long time now.
A netlog of the issue is always the best for these protocol errors:
Gathering information for troubleshooting sites · Cloudflare Support docs
These can be difficult to get from non-technical users though so if you can’t get that, a HAR is ok too:
1 Like
system
Closed
4
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