Question "Default Gateway Not Available" is driving me mad

[James_Y]

Hi all,

Several times a day my Win 10 PC's ethernet driver drops (over power link via plug, not wifi). Using the network troubleshooter usually solves the issue, and the solution returned is always '"Default Gateway Not Available - Fixed". All it seems to do is disable and re-enable to ethernet controller. It's a right pain and it is seriously inhibiting my ability to work from home.

I pulled the various settings below, is anyone able to advise if there is something wrong with the config? Or is there a more standardised way to solve this?

Spoiler: Details

Get -NetAdapter

Spoiler: Details

Name InterfaceDescription ifIndex Status MacAddress LinkSpeed

Ethernet 2 Cisco AnyConnect Secure Mobility Cli... 9 Disabled 00-05-9A-3C-7A-00 99.5 Mbps
Ethernet Killer E2400 Gigabit Ethernet Contro... 4 Up D0-50-99-81-34-8B 100 Mbps

Get -NetTCPSetting
SettingName : Automatic
MinRto(ms) :
InitialCongestionWindow(MSS) :
CongestionProvider :
CwndRestart :
DelayedAckTimeout(ms) :
DelayedAckFrequency :
MemoryPressureProtection :
AutoTuningLevelLocal :
AutoTuningLevelGroupPolicy :
AutoTuningLevelEffective :
EcnCapability :
Timestamps :
InitialRto(ms) :
ScalingHeuristics :
DynamicPortRangeStartPort :
DynamicPortRangeNumberOfPorts :
AutomaticUseCustom :
NonSackRttResiliency :
ForceWS :
MaxSynRetransmissions :
AutoReusePortRangeStartPort :
AutoReusePortRangeNumberOfPorts :

SettingName : InternetCustom
MinRto(ms) : 300
InitialCongestionWindow(MSS) : 10
CongestionProvider : CUBIC
CwndRestart : False
DelayedAckTimeout(ms) : 40
DelayedAckFrequency : 2
MemoryPressureProtection : Disabled
AutoTuningLevelLocal : Normal
AutoTuningLevelGroupPolicy : NotConfigured
AutoTuningLevelEffective : Local
EcnCapability : Disabled
Timestamps : Disabled
InitialRto(ms) : 3000
ScalingHeuristics : Disabled
DynamicPortRangeStartPort : 49152
DynamicPortRangeNumberOfPorts : 16384
AutomaticUseCustom : Disabled
NonSackRttResiliency : Disabled
ForceWS : Enabled
MaxSynRetransmissions : 2
AutoReusePortRangeStartPort : 0
AutoReusePortRangeNumberOfPorts : 0

SettingName : DatacenterCustom
MinRto(ms) : 20
InitialCongestionWindow(MSS) : 10
CongestionProvider : DCTCP
CwndRestart : False
DelayedAckTimeout(ms) : 10
DelayedAckFrequency : 2
MemoryPressureProtection : Disabled
AutoTuningLevelLocal : Normal
AutoTuningLevelGroupPolicy : NotConfigured
AutoTuningLevelEffective : Local
EcnCapability : Disabled
Timestamps : Disabled
InitialRto(ms) : 3000
ScalingHeuristics : Disabled
DynamicPortRangeStartPort : 49152
DynamicPortRangeNumberOfPorts : 16384
AutomaticUseCustom : Disabled
NonSackRttResiliency : Disabled
ForceWS : Enabled
MaxSynRetransmissions : 2
AutoReusePortRangeStartPort : 0
AutoReusePortRangeNumberOfPorts : 0

SettingName : Compat
MinRto(ms) : 300
InitialCongestionWindow(MSS) : 4
CongestionProvider : NewReno
CwndRestart : False
DelayedAckTimeout(ms) : 200
DelayedAckFrequency : 2
MemoryPressureProtection : Disabled
AutoTuningLevelLocal : Normal
AutoTuningLevelGroupPolicy : NotConfigured
AutoTuningLevelEffective : Local
EcnCapability : Disabled
Timestamps : Disabled
InitialRto(ms) : 3000
ScalingHeuristics : Disabled
DynamicPortRangeStartPort : 49152
DynamicPortRangeNumberOfPorts : 16384
AutomaticUseCustom : Disabled
NonSackRttResiliency : Disabled
ForceWS : Enabled
MaxSynRetransmissions : 2
AutoReusePortRangeStartPort : 0
AutoReusePortRangeNumberOfPorts : 0

SettingName : Datacenter
MinRto(ms) : 20
InitialCongestionWindow(MSS) : 10
CongestionProvider : DCTCP
CwndRestart : False
DelayedAckTimeout(ms) : 10
DelayedAckFrequency : 2
MemoryPressureProtection : Disabled
AutoTuningLevelLocal : Normal
AutoTuningLevelGroupPolicy : NotConfigured
AutoTuningLevelEffective : Local
EcnCapability : Disabled
Timestamps : Disabled
InitialRto(ms) : 3000
ScalingHeuristics : Disabled
DynamicPortRangeStartPort : 49152
DynamicPortRangeNumberOfPorts : 16384
AutomaticUseCustom : Disabled
NonSackRttResiliency : Disabled
ForceWS : Enabled
MaxSynRetransmissions : 2
AutoReusePortRangeStartPort : 0
AutoReusePortRangeNumberOfPorts : 0

SettingName : Internet
MinRto(ms) : 300
InitialCongestionWindow(MSS) : 10
CongestionProvider : CUBIC
CwndRestart : False
DelayedAckTimeout(ms) : 40
DelayedAckFrequency : 2
MemoryPressureProtection : Disabled
AutoTuningLevelLocal : Normal
AutoTuningLevelGroupPolicy : NotConfigured
AutoTuningLevelEffective : Local
EcnCapability : Disabled
Timestamps : Disabled
InitialRto(ms) : 3000
ScalingHeuristics : Disabled
DynamicPortRangeStartPort : 49152
DynamicPortRangeNumberOfPorts : 16384
AutomaticUseCustom : Disabled
NonSackRttResiliency : Disabled
ForceWS : Enabled
MaxSynRetransmissions : 2
AutoReusePortRangeStartPort : 0
AutoReusePortRangeNumberOfPorts : 0

Get -NetIPConfiguration
InterfaceAlias : Ethernet
InterfaceIndex : 4
InterfaceDescription : Killer E2400 Gigabit Ethernet Controller
NetProfile.Name : Network 2
IPv4Address : 192.168.0.8
IPv4DefaultGateway : 192.168.0.1
DNSServer : 192.168.0.1

 

[13thmonkey]

There's going to be a lot of troubleshooting I'm afraid, it's either the powerline adaptors dropping out or your NIC causing an issue, I doubt it router related.

Does it happen on wifi? Doesn't tell us anything but may get you over the hump.
Can you run a long cable for enough hours to prove if it does or does not happen? If it still happens it your network card, if it doesn't it's a powerline issue.

 

[MPF-Dean]

jump in to device manager, go to your ethernet adapter, properties, check power settings, dont let windows disable/control

 

[James_Y]

It also happens on another PC running the same Win 10 (home share version) that is running directly via cable from the router so I don't think the power link could be the issue. I just switched off the windows power management for the ethernet controller, will revert in a couple of days if there has been an improvement.

Thanks!

 

[13thmonkey]

Check the lease times on the router and significantly lengthen them or set to zero/-1 whatever it is for infinite. The adaptor restart should encourage the router to send a new IP address, which would be the fix if the router had run the lease out. I've seen similar on my parents laptop, but it could have been user error .