I am having the same issue where the internet just cuts out for a few minutes. This is happening daily since the recent updates. The main eero gets a red light, then in a few minutes, goes back to white and I have Internet again. This is really frustrating. I have made no changes to my ISP, this just started happening after 3.16. 

I've been seeing the same issue since 3.17 update.  I've been patiently waiting for the next software update, but it's been a couple months and this issue is starting to drive me nuts!

I have 2 eero pros which are connected via wired ethernet.  I have ~50 wifi devices on my home network.  Most of the devices are low bandwidth devices like LIFX bulbs, Wemo switches, smart plugs, Echos, etc.  It seems I lose internet daily now for a few minutes.  The internet does come back and the wifi mesh network is re-established.  However, this is causing issues with some of my devices where they can't reconnect to the internet even after the eero app shows there is internet again.  I have to either go into the eero app and restart the network or I need to walk around my house powering off/powering on my devices like the smart plugs and Amazon Echos to get them to reconnect to the internet.  I've even had instances where my Macbook Pro showed I was connected to wifi, but it couldn't connect to the internet and I had to turn off wifi/turn on wifi to get it to reconnect to the internet.

I was able to take the following screenshot within the eero app when this issue occurred.  It looks like the issue is impacting both my eero pros when it happens.

Same problems here. Connection in and out and seems only certain devices have issues now. 

Things seem to be going downhill since Amazon took over ...

Can't reccomend Eero anymore I guess. 

My older Wi-FI devices have also had this issue after 3.16. Randomly once or twice everyday they drop connection for 2+ minutes. Sometimes they just can't rejoin the network for a while. Connecting to other wi-fi is possible, never had this issue with these devices (3) or with eero before 3.16.

I’m also having similar issues, along with greatly reduced speeds on the wireless network.  Will corrective software be released this week?

I've had several eero support email exchanges over the past couple weeks also.  I was first asked to replace my cable modem since it was really old.  So I replaced my cable modem, but it didn't fix the issue.  I was then asked to swap my two eero pro to see if the other unit functioned better as the gateway.  So I swapped my two eero pros, but it didn't fix the issue.  I've been pinging my external ip address non-stop from my Macbook Pro which is on my eero pro wifi mesh.  The ping results shows a few times per day where the ping fails for up to a 2hr period due to "ping: sendto: Network is down", "ping:sendto: No route to host", or "Request timeout for icmp_seq ###" errors.

I received a new eero support email this morning saying he reached out to the next level of support and they both determined that there is definitely a possibility that the eero may be having problems and they want to look into it, but it doesn't appear related to the loss of internet.  In order to properly troubleshoot the eeros, they first want the upstream issue fixed by Comcast so they can separate the problems.

This doesn't make sense to me given the issue happens daily so it would be ideal to debug right now.  If Comcast changes something and the issue happens much less frequently, then it will be a nightmare to debug.  My suspicion is something happened in 3.17 firmware which makes eero handle internet losses less gracefully so that wireless devices can't recover without a mesh restart or device reboot.

So now I get to go deal with Comcast support to see why my internet connection goes down a few times a day...  while my eero pros continue to flake out due to what appears to be an unrelated issue...  sighhhhhhhhhhh...  :(

Same experience for me. After quite literally years of rock solid network stability in the last several months I'm having what I would describe as periodic network "freezes" for a few minutes at a time. It was really bad at first. But recently it's not quite as frequent but still a significant issue. Typically I notice when this happens because I get a notification and email that my Ring Alarm is on cellular backup and then 2-3 minutes later I get another stating that it is back online. But it's not just that device that stops working. In fact, I can specify exactly when it started happening for me:

Nov. 2016 - Eero purchase. Rock solid stability. A truly "set it and forget it" experience.

Oct. 2018 - Ring Alarm purchase. Still having rock solid stability until .....

Sept. 2019 - eeroOS v3.15.1-1 and eeroOS v3.16.0-323 released. 11 Ring Alarm network disconnections.

Oct. 2019 -  eeroOS v3.16.1-1 and eeroOS v3.17.0-534 released. 15 Ring Alarm network disconnections.

Nov. 2019 - 4 Ring Alarm network disconnections.

Dec. 2019 - 7 Ring Alarm network disconnections.

Jan. 2020 - 6 Ring Alarm network disconnections. So far ....

So it's definitely not fixed. I contacted Eero Support back in Oct. 2019. They said the gateway Eero was staying connected but the satellite Eeros were disconnecting. They suggested I do a Soft Reset of the entire network which I did to no avail. As someone earlier said "Things seem to be going downhill since Amazon took over ...".

I am going to chime in here basically saying the same thing:

I have a 5000 sq foot house, and have 3 eero pros, and 3 beacons.  Pros are hardwired through switches that are NON-POE.  I  generally have had good connections / haven't noticed issues until I tried to buy a standard eero and add on in the backyard for extended coverage.  Took the whole network down and made an absolute mess.  None would connect / some would connect, lost wifi on all devices (if you have 30+ wifi switches in your house, re-setting up one by one is a PITA), etc.  All eeros would not come back up, some would not connect.  I would try again, others would come up, and ones that came up the first time would not.  It was a crap shoot on whether all would come back up or not, and finally after probably 5-6 tries and going one by one, they all came back up but it was like walking on egg shells to get done.

Right now I have 4 of 6 devices back up, but afraid to attempt to get the other 2 back on because I know it will take down the others if I try.  

Also, right now, for whatever reason, main network does not have Internet, but the guest network does??  Everything will connect to either wifi, but only internet on guest network works.

I used to have an ubiquiti network that was highly configurable but thought I would move to Eero mesh to "make my life easy".  Far from.  I have angry family and massive frustration.

I did call support the other day, and got the swap out main device concept, rebooting, etc. but nothing was fixed and after an hour on support I had to leave.  Tech was clearly confused what the issue was.

I am going to try to call today and will provide any updates I get, but right now I am highly disappointed that this "simple" system is having so many issues - 100% not was supposed to happen when I bought it.

I threw in the towel.  I was able to get a refund from Amazon with restocking fee. I am moving to another platform.  My three hours on support sealed it for me.