OSRM backend- "No route found between points"

[gopal-mp]

I am trying migrate osrm backend setup from windows 10 with docker desktop CH algorithm to windows server 2022 (Azure VM).
Since docker desktop is not supported in server version of windows I am using windows binaries (v5.16.0)
My pbf file has merged data of few continents of size 48 GB.
my data preprocessing steps are completed, I have completed this using MLD steps, I did not faced any errors in extraction, partition and customize processes. but in extraction, I encountered one warning message few times for different node ID's saying "Turn is a u turn but not classified as a u turn".

After completion of preprocessing I have hosted them using osrm-routed, but I am not getting expected results it is giving result like this:
{
"code": "NoRoute",
"message": "No route found between points"
}

it is giving correct result for some coordinates and for other coordinates it is giving No route found message.

I tried this:
http://localhost:5000/route/v1/driving/-2.2892203985804755,53.604017274352515;-1.8842546987176998,52.52374243277772?overview=false

but got same error as mentioned above, but in my old setup with same data and OSRM-API is giving correct results

Please help me to solve this issue.

Thanks

[fenwuyaoji]

the official website looks good https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=53.7409%2C53.4537%3B52.5236%2C-1.8843#map=5/53.60/25.89. as you said you merged continents into one pbf file. I think the problem could be introduced in this step, each continent is isolated to each other I guess.