VNC internally not working?!

OK, I'm missing something obvious here, I'm sure. Had a Netgear router that was going bad, replaced it with this TP-Link. Things are a bit different, mostly better, with one exception so far: I cannot VNC to another machine on my network. It was working before and of course "nothing has changed" (that I know of!) other than the new router. The machine I'm on is 192.168.0.137 and I'm trying to get to is 192.168.0.121, and both seem to be on the same network (the 5G version). Another machine at .84 is also inaccessible. A VNC connection just waits and then times out.
Any ideas? It feels like I'm missing some checkbox in the router config but I've toured it repeatedly and nothing leaps out at me.
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woozle wrote
Hi,
What operating system are you using?
Whenever I connect to a new router (i.e. network) with my Windows 11 machine, then by default Windows will set the new Wi-Fi connection as "Public" (which blocks incoming connections) and then I have to go into the "Properties" of the Wi-Fi connection and manually set it to "Private" to allow the computer to be accessed by other local clients.
@woozle ah HAH! That might be it. Since I hadn't changed the SSID it never occurred to me that Windows would have changed anything (though it is a new subnet, 192.168.0.x vs. 192.168.1.x). I just reset it on this machine, will try from the other one when I can.
Windows 10, BTW. For anyone else trying to fix this: I clicked on the Wi-Fi symbol in the system information area ("tray"), then on the words "Network & Internet settings", then on "Properties". "Network profile" at the top of THAT dialog has radio buttons for "Public" and "Private" and mine was "Public" was woozle suggested. I looked at one of my Windows 11 machines and the process is quite different:
- Click on the Wi-Fi symbol on the tray
- Click the gear at bottom right
- Stare at that weirdly generic dialog for a while, finally shrug and click on the SSID (network name) sort of in the top right
- Click on "Wi-Fi" in THAT dialog
- Click on "<SSID> properties" near the top of that dialog
- Finally see the Public/Private radio buttons
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Hello @Greybeard3 ,
Welcome to our community.
Have you enabled AP Isolation or Device Isolation? Please disable these features and reboot the network system for a try.
Did you set Parental Control on the router? What rules were set up? Perhaps you could check these settings—they might be the reason why devices can't access each other.
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@Joseph-TP Thanks, but no, no, and no! I should have noted in my post that I'd seen those two isolation options and said "Well, those aren't set, but they sound like they would/could be a problem if they were".
I don't see any Parental Controls anywhere (and Search doesn't find anything under "Parental" or "Control" or "Controls"), by the way. I sure wouldn't have set any.
Joseph-TP wrote
Hello @Greybeard3 ,
Welcome to our community.
Have you enabled AP Isolation or Device Isolation? Please disable these features and reboot the network system for a try.
Did you set Parental Control on the router? What rules were set up? Perhaps you could check these settings—they might be the reason why devices can't access each other.
- Copy Link
- Report Inappropriate Content
Hi,
What operating system are you using?
Whenever I connect to a new router (i.e. network) with my Windows 11 machine, then by default Windows will set the new Wi-Fi connection as "Public" (which blocks incoming connections) and then I have to go into the "Properties" of the Wi-Fi connection and manually set it to "Private" to allow the computer to be accessed by other local clients.
- Copy Link
- Report Inappropriate Content
woozle wrote
Hi,
What operating system are you using?
Whenever I connect to a new router (i.e. network) with my Windows 11 machine, then by default Windows will set the new Wi-Fi connection as "Public" (which blocks incoming connections) and then I have to go into the "Properties" of the Wi-Fi connection and manually set it to "Private" to allow the computer to be accessed by other local clients.
@woozle ah HAH! That might be it. Since I hadn't changed the SSID it never occurred to me that Windows would have changed anything (though it is a new subnet, 192.168.0.x vs. 192.168.1.x). I just reset it on this machine, will try from the other one when I can.
Windows 10, BTW. For anyone else trying to fix this: I clicked on the Wi-Fi symbol in the system information area ("tray"), then on the words "Network & Internet settings", then on "Properties". "Network profile" at the top of THAT dialog has radio buttons for "Public" and "Private" and mine was "Public" was woozle suggested. I looked at one of my Windows 11 machines and the process is quite different:
- Click on the Wi-Fi symbol on the tray
- Click the gear at bottom right
- Stare at that weirdly generic dialog for a while, finally shrug and click on the SSID (network name) sort of in the top right
- Click on "Wi-Fi" in THAT dialog
- Click on "<SSID> properties" near the top of that dialog
- Finally see the Public/Private radio buttons
- Copy Link
- Report Inappropriate Content
- Copy Link
- Report Inappropriate Content

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