Still having trouble with sharing between computers on the same network

I have both computers set up Exactly the same by following the instructions from the support articles on how to set it up - one works, one doesn't. Strangely, it worked for one day - then stopped working. I'm at a loss to understand why. Has anyone encountered this and do you perhaps have some ideas on how to fix?


Thank you!

MacBook Pro (2017 – 2020)

Posted on Mar 27, 2025 3:29 PM

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Mar 31, 2025 7:18 AM in response to MrHoffman

Hello. Yes. Wifi. I'm using the support article I believe you shared with me in my last request.

Set up file sharing on Mac - Apple Support


Everything is as up to date (firmware) as it can be. Screen sharing IS on, but this is file sharing that I'm trying to achieve - the User (name) file and it's contents such as "documents" etc.


I'm not sure about this: "Does the Wi-Fi router have the ability to assign IP addresses using Media Access Control (MAC) addresses?"


Thank you for the help!

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Mar 31, 2025 10:00 AM in response to CCAPPL

CCAPPL wrote:

Hello. Yes. Wifi. I'm using the support article I believe you shared with me in my last request.
Set up file sharing on Mac - Apple Support

Everything is as up to date (firmware) as it can be. Screen sharing IS on, but this is file sharing that I'm trying to achieve - the User (name) file and it's contents such as "documents" etc.

I'm not sure about this: "Does the Wi-Fi router have the ability to assign IP addresses using Media Access Control (MAC) addresses?"


Some Wi-Fi routers have the ability to set a specific IP network address for a known client device, with this address assignment based on the client MAC address.


Note: That’s “MAC” Media Access Control, not “Mac” the computer brand. Though the contents will differ from this, these MAC addresses look like this: 00-53-C1-27-FC-01


Setting a fixed or static or manual IP network address can sometimes make some file servers more easily accessible, as dynamic (DHCP-assigned) addresses and dynamic DNS assignments can sometimes cause issues connecting to a server. Fixed (unchanging, static, manual) IP addresses don’t vary.


Which Wi-Fi router vendor and model do you have? From that, I can check whether the router supports this feature.


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Mar 27, 2025 4:16 PM in response to CCAPPL

Which macOS?


What sort of sharing? Presumably file sharing, but screen sharing and other sharing possibilities exist.


Which support article are you following?


Presumably this is Wi-Fi?


Is the Wi-Fi router (or wired Ethernet router) running current firmware?


Does the Wi-Fi router have the ability to assign IP addresses using Media Access Control (MAC) addresses?

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Mar 31, 2025 11:45 AM in response to Grant Bennet-Alder

Grant - Yes. Both computers show up in the sidebar on finder, respectively. We can login to the other computer as that computers owner or with the admin password. It connects fine and will show the file structure (docs, downloads, etc) but when you click on any of those folders they are empty (no access).


As mentioned, I struggled with this and then one day it finally worked. Then the next day it stopped working again - nothing had changed.

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Mar 31, 2025 11:48 AM in response to MrHoffman

Thank you Mr Hoffman!


Wifi is via Starlink. Router is hard wired. Starlink router and using eeos as a mesh. All firmware is current.


We are also using a VPN but as mentioned, this all worked before with the VPN ON - and in checking with the VPN provider, should still work.

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Mar 31, 2025 1:25 PM in response to CCAPPL

to access files on a second Mac, you must have provided connection credentials that are the SAME as what you would need to login locally on that second Mac.


Each Mac grants access to its own files as if there were the only Mac in the world -- they do not coordinate.

There is no sense of "an Admin on this computer is an Admin on the second computer."


User-id with the same name on the second computer is NOT the same User-id. They are completely distinct.





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Mar 31, 2025 4:48 PM in response to CCAPPL

Please download and run (free) EtreCheck, and when the run completes share the report to the clipboard. Then open a new reply here, and press the additional-text button that looks like a printed page to get a text input box big enough to paste the hardware and software configuration report here, and paste and post that report here.

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Still having trouble with sharing between computers on the same network

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