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MacBook Pro: Cannot install Ugreen NAS client app, 'required rights' error

Hi, I am trying to re.install an app. I downloaded the app from the manufacturer as it is not available in the app store. I doubleclick on the .dmg and copy the app into the applications folder. Then I get an error message telling my that the task cannot be completed because O have not the required rights for the app. I am signed in with administrator rights. I can install any app, except for this one. The app runs fine if I start is from the .dmg directly. The issue is not the app itself. This all happened after I tried to re-install the app. The previous app does not exist anymore. What could be the cause and how to mitigate?

Macbook Pro M5 with Tahoe 26.6.2

The app in question is the Ugreen NAS client

15 replies

I have another experiment that might change something. Consider restarting in Safe Mode. Safe Mode does one pass of Disk Repair as it starts up, and then loads a minimal set of Apple-only extensions.


When you next Restart into regular mode, several system caches are rebuilt.


Among all of that activity sometimes wonky problems like this one get fixed.


Start up your Mac in safe mode - Apple Support



OK! That did the trick. I could install the app in Safe Mode.


Thanks for your support!

the /Applications folder is a simulation that provides YOU with a uniform view of two sets of Applications.

• the invariant set included with MacOS

• the ones you added.

these are stored and treated differently.


Seeing Apple and the App maker stumped by this suggests you may have a problem with permissions in the Admin account you are using.


An experiment would be to create an additional NEW admin account, and see if working logged in as that new Admin account, you are able to work around the problem.

Select the /Applications folder and choose GetInfo.


do System and Admin have read/write access to this folder?


The best way to illustrate what is happening is on a drive that has a System on it, but is not the actively running system. when I look at such a drive on my Mac, it has only 128 MB made up of eight files that I added.


when you look at such a drive, the only items actually in that folder (not simulated) are the Applications you added. all the standard system Applications are stored in a different folder, and locked up tight.


if you can install the app in Safe Mode, then you should be able to just configure it in normal mode -- no need to install again.


if you are finding that some settings can not be changed, then maybe a directory with some settings is locked or not write-able.


Wanheri wrote:
Hi, I am trying to re.install an app. I downloaded the app from the manufacturer as it is not available in the app store. I doubleclick on the .dmg and copy the app into the applications folder.
Then I get an error message telling my that the task cannot be completed because O have not the required rights for the app. I am signed in with administrator rights.
I can install any app, except for this one.
The app runs fine if I start is from the .dmg directly. The issue is not the app itself.
This all happened after I tried to re-install the app. The previous app does not exist anymore. What could be the cause and how to mitigate?
Macbook Pro M5 with Tahoe 26.6.2
The app in question is the Ugreen NAS client


Copy the app(?) or drag and drop it into the Applications folder...

ref: Safely open apps on your Mac - Apple Support



further support ref: Ugreen NAS client app https://ai.ugreen.com/pages/service


Wanheri wrote:
Yes, both, system and admin have read/write access to the applications folder.

Then that theory does not pan out.


Unfortunately I do not understand the rest of your explanation..


MacOS runs from a crypto-locked snapshot of certain files on your drive. A snapshot is a virtual 'Volume' that is created with File system "pointers" to the actual files.


When you look at a System drive 'at rest' i.e., not actively running, then the structure of the snap-shotted /Applications folder becomes more clear. This folder is simulated from a few files you added in the underlying /Applications folder, and the completely invariant Applications actually stored in /System/Applications folder.


so my thought was that if the /Applications folder was inaccessible to you System or Admin users, then perhaps that could explain why you could not add anything.

<< the sync service does not start (error message). >>


WHAT error message, Exactly?


That may be the key to progress.

Thanks for your Help, Grant.

However, after creating a new Admin Account and trying to install the app in that account, the result is the same. It is not possible to install and MacOS tells me I do not have the rights to install the app

Unfortunately, it looks lie if in safe mode the configuration is different, because the settings I do in the app are partly gone in normal mode. And I still cannot re-install the app in normal mode. - Oh well...

The thing is, that I am trying to syncronize my Macbook with the NAS. In Safe Mode I can configure this. In normal Mode the configuration is gone. And I cannot configure the synchronization as the sync service does not start (error message).


If I start the app from the .dmg, all works well


So now I am talking to Ugreen again. And I have not idea which directories might be locked or in write mode

The Message is in German but it basically says "An error in "Sync & Backup": The synchronization / backup Task with the computer could not be executed. Please reload the app and try again after logout"


A restart of the sync- and backup servce does not help, neither the restart of the app

Copying the app to the application folder does not work - same m essage that I do not have the necessary rights. Ugreen service could not solve the problem either

Yes, both, system and admin hjave read/write access to the applications folder.


Unfortunately I do not understand the rest of your explanation...

OK, I kind of understand but I am not an expert. The thing is that I can copy files into the application folder, I can delete them and I can install other apps. Only the Ugreen app one is the issue