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U90Ladder - run without admin rights ?

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We want to use the U90 ladder software (last version) on a Windows 10 computer, which is integrated in a domain. So the user don't have the administrator rights.

The installation is firstly done with a domain admin account and password, but, after that, the software  is protected and each time we want to start it, the system request the domain admin account to start !

Is it mandatory or is there a solution to avoid this step ?

Thank you for your help.

Kind regards


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Hello, Many thanks for your answer but it doesn't work.

Firstly, I had difficulties to copy the new EXE in the folder.

- Downloaded file was unlock

- I gave all the rights in the folder c:\Program files\Unitronics to the user.

- I saved the old version

- I copy the new version

When I start the new version, the system request the admin account and password and after input, the software don't start !

So, I recopy the old version and all returned in the previous state.


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  • MVP 2023

Ensure when doing all of this that you check with task manager, each time you try to start the program, that there isn't a stray instance already running.  Sometimes during hiccouphs it can remain running in the background and needs an End Process applied.  This might account for your beep only.

cheers, Aus

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  • 1 year later...

Hello all,

When you asking for help, please always state U90Ladder/VisiLogic/UniLogic etc. version.

Do not write "last version".

Knowing exact version will make our help fastest.

Anyway, first installation should be processed with Administrator rights (assist your IT), then replace file.

Replacement will require Administrator rights as well.

Then you will continue your work without Administrator rights.

Knowing your version we will send you link to download proper file.



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