I have a application need to run under Administrator right, If I run it with Guest user account, after click the UAC dialog, using Windows API to get the current user folder in AP will be changed to Administrator folder, not Guest folder. How to solve it?
Get the current user folder before triggering the UAC dialog, store it somewhere and pass it to the code that runs after the UAC.
If this does not work for you, please explain why and post some code.
Related
Apologies if this is a really simple question...
We have a .NET application that is installed by an administrator, and then run by multiple staff on the same computer with their own login credentials (normal user - non-admin).
Application uses MSI installer and is installed to Program Files folder.
The application needs to have some settings about attached devices to the computer saved as preferences so when a user opens the app these settings are set and the user is not asked for preferences each time. These preferences should not be set per user, rather per computer.
However if user A changes one of these settings on the computer, then when user B logs in they should see the changed setting from user A.
Hence the settings need to be per computer, not per user.
Where in windows 7,8,10 etc. can an application save data that is computer specific not user specific, yet allow users without admin rights to change that data?
We have looked at system temp folder but the computers have GPO policy to regularly remove temp folder content.
Any other ideas?
It takes administrator rights to change the permissions on a registry key inside HKLM, but once that's done, anyone in the group given permission can make modifications.
Obviously don't change permissions on any of the standard keys (e.g. HKLM\Software or HKLM\Classes) but in your own application area (HKLM\Software\YouCorp\YouApp\Attached Devices) it's perfectly fine to adjust permissions the way you like.
You'll just have to include "grant write permission on HKLM\Software\YouCorp\YouApp\Attached Devices to the group Users" as one of the actions of your installer.
If you are allergic to the registry, you can do the same with a subdirectory of your application install (e.g. %ProgramFiles%\YouCorp\YouApp\Device Settings)
Given you are using a .Net application, you could store the information in the app.config file associated with the application.
Can someone tell me how (in Windows 7 PRO) I can create a folder, so when I try to open it, User Account Control will ask for a Administrator's password. I need to restrict a folder on the C: drive, only be opened by administrators, and if a normal user tries to open it, he will need the Administrator's password.
You could go to Control Panel, then you go to User Account and Family Safety. Then go to Parental Control and unable it, or get your user off the list. After that, you should be able to do it.
(AT LEAST IT WORKS FOR ME!)
I'm having a mystery.
I have a Windows 7 PC, I am an administrator on it. But, I have a software tool that still requires me to run it with "Run as Administrator" to work properly. Why isn't it enough just to be the admin and just run it with double-click?
The thing gets complicated - I have another PC with a user that is an administrator also, and the tool runs there just with double-click properly.
What could be the difference between the PCs? In both of them, the user is an administrator!
Thanks for any help,
This is the impact of the User Account control (UAC), which assigned 2 tokens to admin accounts and runs the shell (explorer) and all started programs by default with the filtered token which represents standard user rights. To request admin rights, you have to right click and select “Run as administrator”.
I need to create an NSIS installer, which runs with administrator privileges. I request these privileges with
RequestExecutionLevel admin
So far this works. But I also need to place shortcut links on the users desktop. I do NOT want to create the shortcuts for all users but only for the currently logged in user. So I use
SetShellVarContext current
in the installer sections. If the current user has admin privileges, this works. If I have a normal user, Windows (7) asks for credentials for a privileged user, which is also correct. But the installer then creates the icons on the privileged users desktop, and not on current users.
So, how can I tell NSIS, that it should create desktop icons for the current user if she has no admin privileges?
FYI, if I omit both RequestExecutionLevel and SetShellVarContext, I am also prompted for administrative rights but the installer creates icons on the current user desktop as well as for the admin user. I think this is some kind of compatibility behavior.
You are not really supposed to do this (because of this exact issue) and you are basically asking how to create a installer that is broken by design. This is not a NSIS specific problem and not even UAC specific, it has existed since runas was added in Win2000! When you elevate with runas/UAC the new process is executed as that user and with their HKCU and shell folders...
If you need "RequestExecutionLevel admin" in your script then you are doing machine level things and should therefore call "SetShellVarContext all" and install the files in $ProgramFiles and write the uninstall registration under HKLM. This is true for any version of NT, not just Vista+/UAC. (Most people forget to test as non-admin on NT4 and NT5)
If creating shortcuts for all users is such a big problem then I suggest you enable the "Don't create shortcuts" checkbox on the startmenu page so the user can decide.
If you still want to force broken behavior then you need to use this plugin. (You should be able to find plenty of topics about this plugin on the NSIS forum)
I installed my application in Windows 7 and as part of the installation, it installs some text files. Now, if I open the text file in notepad and try to save it, I get an "Access denied" error. I'm logged in as administrator on the machine and the file is not marked read only and security permissions seem to be fine.
However, I could delete or rename the file without any problem and I could create a new file with the same name/location using notepad and the save works fine.
I understand it has something to do with UAC. I'm wondering what UAC does in order to block access to the file. Our application is not installed in Program files folder as I believe UAC restrict any changes to files in Program Files folder
Can anyone throw light on what is going on.
regards
G
With UAC, just because you're logged in as a user with administrator privileges does not mean a program actually runs with them. The program has to either request privilege elevation (which gives the "Do you want to allow this program to _____" UAC pop-up) or explicitly be run as administrator (right-click on the program/shortcut and choose Run as Administrator).
By default most areas of the drive outside of the standard "user files" (a.k.a. My Documents & co.) are restricted to administrator-only access, but the folder permissions can be changed to add access for a particular user if desired.
You will find that saving files almost anywhere except the "my documents" area for the user will be restricted, this includes saving to other drives on the system etc.
If you check the permissions for the directory you are trying to write to, all you have to do is expressely give the user permission. Otherwise only the admins have permission, which requires UAC approval from the user to get the admin token.
You normally get "Access Denied" error when the file is in use. UAC could not be an issue here. Check out if the file is in use by anyother process.
You can use tools like Process Explorer from sysinternals to do that.
You have to right click the file and select properties. THen open the security tab and you can see different accounts with differet privelages. Click USERS and it should highlight. The box under it should have a bunch of check marks that indicate what this user can do. Click Full Control. Apply and Okay. Then you can save!!!