HTTP/2 missing: Check protocol and hosting
Modern protocols improve parallel transmission and technical basis.
Modern protocols improve parallel transmission and technical basis performance errors should be prioritized according to affected templates and user view. Not every technical warning is equally business critical.
Connect protocol indication with actual loading time
An HTTP/1.1 response is not automatically a functional error. In the network area, check which protocol the browser actually negotiates with the public endpoint. An upstream CDN can use a different protocol than the connection to the source server.
Example: Recognizing the Result
Illustrative example: A measurement retrieval negotiates HTTP/1.1 while the browser receives HTTP/2 via the CDN. The measurement path also determines which protocol becomes visible.
Limit cause and implement correction
Then compare relevant loading phases and not just the protocol designation. Large images, slow server responses, or blocking scripts can dominate regardless. If the server configuration is adjusted, certificates and normal retrievals must still work. HTTP/2 does not replace optimization of transmitted content.
What makes you recognize a suitable correction
Compare browser network protocol and test environment. Measure the actual loading time under suitable conditions, instead of optimizing the version number alone.
Classification and boundaries
When is this indication not a clear error?
A single client cannot support or negotiate the higher protocol. This is not automatically a global server property.
HTTP/2 missing after CMS and cause
Many audit messages can be resolved faster if they are grouped by system, page type and technical cause. CMS indentations are only linked where HTTP/2 lacks a clearly own cause or fixed route in the respective system.
For this error, there is currently no own CMS deepening, because the correction is usually not sufficiently system-specific. Take advantage of the general causes and checks on this page.
Frequent causes of this error
Related SEO Errors
Appropriate Seitenreport checks
This error should not be checked in isolation. The following tools and clusters help to narrow down the cause faster and to cleanly prioritize the affected URL groups.