Further to Post of February 28, 2020--Bob Timmons

Follow up........I powered off the Time Capsule, which disconnected it from the network. Then, I used another Mac to access the Time Capsule. The Time Capsule did appear in the left panel of a Finder window, but when I double clicked on the Time Capsule, the next window opened to display that the TC was "Disconnected", but there was a "Connect As" button in the same window.

When I clicked on "Connect As", I was asked to enter the Time Capsule administrator password, then the TC hard drive.....named Backups.....appeared.

Shouldn't I be able to access the contents of the TC with the Finder menu?

Yes

why do I see "Not Connected" in the finder menu when I double click on the New TC icon?

I don't know, because I cannot duplicate the error that you are reporting. When I double click on the TC icon under the Locations heading in any Finder window, the TC hard drive, which I have named Backups appears. If I double click on Backups, the Time Machine backup files appear, etc.

Can you post a screenshot of the window that appears with the "Disconnected" status displayed? Is there another button somewhere labeled "Connect" or "Connect As"?

There is another way to use the Finder to access the hard drive on the TC, which is normally called "Data", unless you have changed the name of the drive. We can try that, but I want to see the screenshot first.

As far as you had posted it was working great for me. I had created my temporary network and my TimeCapsule has come up in the Airport Utility app. with the little box next to it giving its IP address and other identifying info. What is to be done next? I tried editing the Time Capsule information and changing the wireless option from Create a wireless network to extend a wireless network and entered the info for my main wireless network. But that caused my Time Capsule to be no longer found by Airport Utility.

Everything was fine until you changed the wireless setting from "Create a wireless network".......which was the correct setting....... to "Extend a wireless network".......which is the wrong setting for the Time Capsule.

Since the Time Capsule was given the wrong settings and has now disappeared, you will have to start over again and reset the Time Capsule back to its default settings and then set it up again.

can you complete your instructions for converting an Apple Time Capsule to a networked NAS drive?

The Time Capsule does not need to be converted to a networked NAS drive because it is already a simple networked NAS drive when it is set up correctly.

Everything was working for me

Then, I'm confused why you changed the settings on the Time Capsule.

I am a Sonos user and recently installed an Eero wireless network to beef up reception to some remote access points--but in doing so, Sonos was no longer able to find my iTunes music library (on my Time Capsule).

I am not familiar with Sonos products, so I am not able to help in that regard. I am familiar with Eero products and can tell you how to try to connect the Time Capsule to your Eero router. But, I don't have an Eero system here to test, so I cannot offer any guarantees that things will work.

Frankly, you may do better to wait for another user who is familiar with Sonos.

2nd Follow Up........if all else fails, you can use the Finder > Go > Connect to Server command to try to access the hard drive on the Time Capsule.

Go to any Finder window

Ciick the Go Menu at the top of the screen

Click Connect to Server

In the address box, enter the following:

afp://IP LAN Address of the Time Capsule

So, if the LAN IP Address of the Time Capsule is 192.168.4.27 as you indicate above.....you would enter

afp://192.168.4.27

Click Connect

You will likely be asked for the Time Capsule administrator password or the disk password if you set one up

Now I will see if I can get my Sonos system to find these files.

I don't know how the Sonos device connects, but the Time Capsule LAN IP Address may be needed.

You don't want that LAN IP Address to change, so I would recommend that you give the Time Capsule a Static IP address so that it will always be at the same address on the network.

To do that, open AirPort Utility, click on the Time Capsule and click Edit in the smaller window that appears

Click the Internet tab at the top of the window

Change the setting for Connect Using from DHCP to Static

Click Update to save the changes

If you do not need the "temporary" network the the Time Capsule is providing, you can use AirPort Utility > TC > Edit > Wireless tab to change the setting for Network Mode to Off, then Update to save that change.

But, before you do that, make sure that you can access the Time Capsule using AirPort Utility with your normal WiFi network.

but this only seems to be the recommendation if you are NOT connected via your WAN port.

But, if you check the Network tab in AirPort Utility, you will see that your Time Capsule is in Bridge Mode, which Apple calls "Off (Bridge Mode)'. The "Off" simply means that the routing function on the Time Capsule is is turned off to allow your main router to control the network.

In Bridge Mode, there is no WAN port, all ports behave exactly the same...... as LAN ports. So, you could swap the Ethernet cable from any port to any other port and it would not make any difference.

If things are working OK and you are happy, then there is probably no reason to change them.

Note that this was a "recommendation", not an absolute "must do". Assigning a fixed or static IP address is standard operating procedure in professional networks, but a simple home network with a limited number of devices may work fine using DHCP.

IF.....as I noted above.....the instructions for using the Sonos device called for entering the IP address of the Time Capsule so that it could be located, that would be a good reason to use a static or fixed IP address. The reason.....after a power outage, and the router has restarted it may very well assign a different IP address to the Time Capsule. But, the Sonos device will be looking for the Time Capsule at its old IP address and won't be able to find it.

So, before you run into an issue of the Sonos device not being able to connect to the Time Capsule, you might try powering off the network to simulate a power outage or blip, and then restart all the network devices. If you don't want to do this at this time, then keep in mind that things like this will happen, so if you find that the Time Capsule cannot be located by the Sonos system, you'll know where to look first.

I use a static or fixed IP address for my printer, so devices will always be able to find it, and I don't have to restart a Mac or an iPhone / iPad so that it will pick up the new different IP address that was assigned to the printer.

When I attempt to connect the TC to my Eero network wirelessly, it crashes out and tells me I am entering the wrong PW even though I know the PW is correct.

The Time Capsule cannot connect to the Eero wireless network using only a wireless connection. Even if it could......(it can't).....the wired Ethernet connection provides much better performance than wireless, so that would be by far the best way to set things up.

No harm in leaving the temporary network active as long as it is not interfering with the Eero network.

Happy that we could help.