Nope, I had to dig into the logs to figure out what was wrong. I was just running the assisted installer. From there it became clear it was initdb that was failing. There's no "free text" alternative field to input locale, it's only possible to choose from a drop down. Ideally it would be possible to input that by ourselves (or just replace the drop-down value with the correct one).
Regards Øystein (good luck trying to install Python with Ø in your Windows home folder btw).
I wrote: > PG Bug reporting form <noreply@postgresql.org> writes: >> I downloaded the latest installer for windows and tried to install a local >> database server with locale Norwegian Bokmål. Looks like this bug is back in >> version 17? Or maybe it's windows 11 that is causing it?
> Sigh, did they rename it again?
Oh, never mind that. I'd forgotten about this recent change:
<para> This is only an issue on Windows, as such locale names are not used elsewhere. They are problematic because it's quite unclear what encoding such names are represented in (since the locale itself defines the encoding to use). In recent <productname>PostgreSQL</productname> releases, an abort in the Windows runtime library could occur because of confusion about that. </para>
<para> Anyone who encounters the new error message should either create a new duplicated locale with an ASCII-only name using Windows Locale Builder, or consider using BCP 47-compliant locale names like <literal>tr-TR</literal>. </para>
So your fix is to specify the locale explicitly to initdb, along the lines of "--locale=no-NO" (I'm guessing about the Norwegian locale to use, but it's probably close to that).
Was the error you got not sufficiently clear about this?