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Hi,
Our website stopped opening on Safari, appears “kCFErrorDomainCFNetwork error 303” (and sometimes on Firefox, appears “ERR_SPDY_PROTOCOL_ERROR”) after enabling Cloudflare.
The Cloudflare teams says that it’s an W3 Total Cache issue. If we disable CloudFlare, the problem stops occurring, but they are saying that it’s a W3TC error.The issue happens in our staging and production environment.
Can you help us?
Thanks.Hello Gabriel,
Thank you for reaching out and I am happy to assist you with this issue.
I’ve checked your website on safari, I can see that the W3 Total Cache is active and yes, I can confirm getting the ERR_SPDY_PROTOCOL_ERRORIf we disable CloudFlare, the problem stops occurring
Are you referring to the W3 Total Cache Cloudflare extension or reverting back the DNS nameservers from Cloudflare to your origin?
Have you tried purging the cache and clearing your browser cache?
Is the DNS pagination completed on Cloudflare?
Can you please share any additional information on why the Cloudflare support suggested that the issue is with W3 Total Cache?I am sorry for a lot of questions, however, this is the first time I am seeing this kind of problem related to Cloudflare or W3 Total Cache so we need more details for troubleshooting.
Thanks!
Hi Marko,
I’m referring to reverting the DNS back to the origin.Yes, I have tried to purge the cache (on W3TC and Cloudflare), the DNS pagination is completed.
They said that is W3TC because if we disable the W3TC Browser Cache feature the issue stops happening, but we can’t disable, as our theme uses features from W3TC Browser Cache.
Thanks,
GabrielHello Gabriel,
Thank you for the information.
Can you please disable the settings one by one in Performance>Browser Cache, save the settings and purge the cache after each setting is disabled, and see which one might be causing the issue?Thanks!
Marko,
Apparently it’s the gzip one.However, when I disable it, some functions on my website, like the login button, disappear.
Thanks,
Gabriel.Hello Gabriel.
Thank you for the information.
Well, this is a strange issue, to say the least.
Can you please go to Performance>Browser Cache, re-enable the Gzip compression in the General sub-box and save all settings. Then, disable the Gzip compression for each sub-box individually (HTML&XML, JS/CSS, Media, and other files), save all settings and purge the cache after each one is disabled, and see which one specifically is causing this and if that one also causes the login button to disappear??!
Do you have any other plugin that may be setting the gzip compression or possibly zlib?
Thanks!
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