For howers I try to fix this problem. A standart user cant change any article. I installed
com_admin_user_access_v2-0-6_j1-5-x_trial.zip
mod_admin_user_access_backend_v2-0-9_j1-5-x_trial.zip
mod_admin_user_access_frontend_v2-0-6_j1-5-x_trial.zip
plugin_admin_user_access_v1-0-0_j1-5-x_trial.zip

I allowed all modules, all workflow, all plugins, all komponents, all articles, all categories but no chance to modify any article with a standart user.
Can anybody please help me? Thanks

Which Joomla group does your 'standard user' belong to?

To edit content you need those user to be editors. AUA is not a hack, it can opnly restrict thing, which Joomla allows. AUA can not make users edit content which Joomla would not allow.

My standart user is a backend administrator. With a editor I cant log in to the backend. Sinze I installed AUA I cant access to the Frontend. There comes the following message "Restricted access".
Thenks a lot for your help.

So as a 'administrator' you can log in the backend and edit content. But when you click on the edit icon at the frontend you get a message. What sort of message is it? AUA shows Javascript alerts, if it is not, it is probably not AUA stopping access. To test this, disable the AUA module for the frontend, all articles should now be editable, for a 'administrator' at the frontend. If you still get that message, it is not AUA restricting the user.

Help! No more access to the Frontend. What to do? Could you please have a look I dont find the Error.
My backend access is
[edit]
Never ever post login data online! Normally I would mail you and ask for login details which you can then send me by email (preferably packed in rar-format).
[/edit]

The tests I did in the Backend with the user [edit]login details deleted[/edit].

I checked the site, but it is not AUA doing this to your frontend. (see my mail to you)

AUA only restricts the editting of content, so from the frontend it can never fully disable the frontend of a website. But just to make sure I disabled the AUA frontend module and still got a 'Restricted access ' warning. That warning is not from AUA, so it is not AUA what is cripling this site.