Tried again and got an error code 0x80028017 which apparently means I cannot connect to the MS Server. I will remain at 24H2.2610.2033 until it is sorted.
I had an issue with KB5043178 not installing and found that I had to install KB5043080 fist and then all went well . I note there have been several other updates that fail because KB5043080 was not installed.