I've find this guide online:
Solution :
Login to Database through PHPMyadmin
In your wp_options (orwp_ID_options on multisite) there’s a row / option called ‘wp_data_newa’. Will investigate further to see who’s responsible for this but for now you can (temporarily!) fix it by removing it with an SQL statement:
DELETE FROM wp_options WHERE option_name like '%wp_data_newa%'
Make sure to adjust your table prefix.
It says that it is a temporarily fix..so I will have on my site another time update.exe on automatic download?! Please help me..