No longer can connect my Switch to internet, 2110-2101 or 2110-2003 errors

[Hayato213]

It has problems only with the main network, the 5GHz one connects just fine. But 5GHz networks tend to be unstable, I absolutely do not want to disconnect during a salmon run shift.

How many bar of wifi is it getting though?

 

[linuxares]

5GHz should be as stable as 2.4GHz depending on how your setup looks like.

 

[GILLIO]

Try connecting your Switch to a hotspot. If this works, the problem is on your own network

 

[Ondrashek06]

I'd try going into the maintenance mode in order to clean the cache, seeing that you've already done everything else that I would personally do.
Here's how:

1. Turn off your console.
2. Boot into RCM the way you usually do and, before sending your fusee.bin payload, hold volume + and volume - at the same time and let your console boot into CFW. You'll see an Atmosphere logo, followed by a Switch logo. After a while your Switch will enter into the maintenance mode. At this point any pending update and cache is deleted/cleared (on your sysNAND/emuNAND).
3. Press the power button once again and It'll shut down the console.
4. Boot into CFW the way you usually do and see if that fixed your connection issues. Don't forget that connecting to the Internet is safe only if you have DNS MITM in place.

Hope that helps. Other than that, unfortunately, I have no clue what could be an issue.

Nope, it just won't budge. Is there like a file with all network-related stuff I can delete?

 

[linuxares]

Nope, it just won't budge. Is there like a file with all network-related stuff I can delete?

factory reset it

 

[Ondrashek06]

Try connecting your Switch to a hotspot. If this works, the problem is on your own network

As I said, the problem is not on the network with 99% certainty. This problem only shown up after I rebooted the device to swap to SysMMC. Until that I've been happily playing Mario Maker 2 online without problems.

Post automatically merged: Jan 24, 2024

factory reset it

Are you serious? All the game NSPs took a long time to download & install, if I factory reset it, I'm going to be looking at a day full of redownloading the NSPs, installing them and most likely fixing issues with Tinfoil.

Post automatically merged: Jan 24, 2024

How many bar of wifi is it getting though?

Two bars.

Post automatically merged: Jan 24, 2024

UPDATE: Disabling 802.11ax mode on the router somehow got it partly working again - it randomly connects and it thankfully STAYS connected.

 

[Doctorbeefy]

As I said, the problem is not on the network with 99% certainty. This problem only shown up after I rebooted the device to swap to SysMMC. Until that I've been happily playing Mario Maker 2 online without problems.

Post automatically merged: Jan 24, 2024

Are you serious? All the game NSPs took a long time to download & install, if I factory reset it, I'm going to be looking at a day full of redownloading the NSPs, installing them and most likely fixing issues with Tinfoil.

Post automatically merged: Jan 24, 2024

Two bars.

Post automatically merged: Jan 24, 2024

UPDATE: Disabling 802.11ax mode on the router somehow got it partly working again - it randomly connects and it thankfully STAYS connected.

Ah, so it was network-related. I believe the switch doesn't play well with dual-band networks.

 

[linuxares]

Are you serious? All the game NSPs took a long time to download & install, if I factory reset it, I'm going to be looking at a day full of redownloading the NSPs, installing them and most likely fixing issues with Tinfoil.

It's the way you remove the file with all the network files

EDIT: Please don't tell me your 2.4GHz and 5GHz use the same name?

 

[Hayato213]

Ah, so it was network-related. I believe the switch doesn't play well with dual-band networks.

Not really, I have no issue with my tri band networks.

 

[Ondrashek06]

It's the way you remove the file with all the network files

EDIT: Please don't tell me your 2.4GHz and 5GHz use the same name?

They both use different SSIDs, don't worry.

 

[linuxares]

They both use different SSIDs, don't worry.

Curiously, which name is the router?

 

[Ondrashek06]

Curiously, which name is the router?

I'll answer the router model number when I get home, we still have the box.

 

[R4ismychildhood]

I'll answer the router model number when I get home, we still have the box.

is this resolved because I'm encountering the same issue since 16.0.0

 

[Ondrashek06]

is this resolved because I'm encountering the same issue since 16.0.0

Iirc the thing that helped to connect was disabling Wi-Fi 6 in router settings, after that I recall it still taking a few attempts but then successfully connecting

 

[R4ismychildhood]

Iirc the thing that helped to connect was disabling Wi-Fi 6 in router settings, after that I recall it still taking a few attempts but then successfully connecting

I don't have Wi-Fi 6 according to "netsh wlan show drivers" in cmd

 

[antiNT]

I don't have Wi-Fi 6 according to "netsh wlan show drivers" in cmd

One thing you could do to rule out any possible issues with the switch itself is to try to connect to a hotspot on your phone

 

[R4ismychildhood]

One thing you could do to rule out any possible issues with the switch itself is to try to connect to a hotspot on your phone

update: after turning "whole home Wi-Fi" from "manage my Wi-Fi" on 192.168.2.1 off then back on, both SysNAND or EmuNAND connect to the usual WiFi with no problems — magic!

 

[urherenow]

Are you serious? All the game NSPs took a long time to download & install, if I factory reset it, I'm going to be looking at a day full of redownloading the NSPs, installing them and most likely fixing issues with Tinfoil.

Are YOU serious? You play online games with NSP's installed? If you use a file-based emummc, you can just make a backup of the sd card, then copy all of the files back when you're done, and your emummc will be untouched (you can do the factory reset without your card inserted, also). And it doesn't matter if you claim to not pirate games. Simply allowing Tinfoil to install to your main menu will get you banned.

 

[Ondrashek06]

Are YOU serious? You play online games with NSP's installed? If you use a file-based emummc, you can just make a backup of the sd card, then copy all of the files back when you're done, and your emummc will be untouched (you can do the factory reset without your card inserted, also). And it doesn't matter if you claim to not pirate games. Simply allowing Tinfoil to install to your main menu will get you banned.

I play online games on a clean sysMMC while installing NSPs on an emuMMC with Nintendo servers blocked.

That approach isn't bannable afaik.

 

[urherenow]

I play online games on a clean sysMMC while installing NSPs on an emuMMC with Nintendo servers blocked.

That approach isn't bannable afaik.

No, that approach is all good. And as long as you backup your SD card (including the emummc partition, if you're using a partition-based), then there will be no downloading/re-installing of NSPs required. Just be sure you have updated sys-patch installed and verified working, before trying to launch any NSP-installed games after a FW update. Trying to launch them without the proper patches will flag them as corrupt, then you really won't have any choice but to reinstall them.