ok, i hope it solved my problem permanently…
I check in confixx my domain settings… mod_rewite was checked, but in my web.1.conf it wasn’t loaded, so i put the line:
`LoadModule rewrite_module modules/mod_rewrite.so` at the end of the document and restarted apache. Now it works…
During restart i get the warning, that mod_rewrite can’t loaded twice… but, OK, it works…
thank you Bowe.
but it didn’t fix my Problem. Only an empty .htaccess works without a permission-error. Well, is it possible to change the linkstructure for buddypress? for example index.php/activity/ instead of /activity/ ?