Thousands of AdguardHome errors in my log - Extremely slow browsing

Guys, since yesterday I've been noticing that from time to time my browsing, both on the internal network and on the internet, becomes extremely slow...

When I ran some quick tests, I noticed that if I tried to browse via IP address, everything was normal, but via DNS, it was horrible.

Without doing much research, I was restarting dnsmasq and adguardhome, which made my connection return to normal. However, now, more calmly, I'm noticing that my log is flooded with these errors...

Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.309270 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBWZvbnRzCmdvb2dsZWFwaXMDY29tAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.361051 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA3d3dwdnc3RhdGljA2NvbQAAQQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.471384 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA2xoMxFnb29nbGV1c2VyY29udGVudANjb20AABwAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.471448 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA2xoMxFnb29nbGV1c2VyY29udGVudANjb20AAAEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.471471 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA2xoMxFnb29nbGV1c2VyY29udGVudANjb20AAEEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.482681 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA3NzbAdnc3RhdGljA2NvbQAAHAABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.482731 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA3NzbAdnc3RhdGljA2NvbQAAAQABAAApCAAAAIAAAAA\": context deadline exceeded"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.482841 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA3NzbAdnc3RhdGljA2NvbQAAQQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.578098 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBWZvbnRzB2dzdGF0aWMDY29tAABBAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.578097 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBWZvbnRzB2dzdGF0aWMDY29tAAABAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.578112 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBWZvbnRzB2dzdGF0aWMDY29tAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.936053 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBGFwaXMGZ29vZ2xlA2NvbQAAQQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.937177 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBGFwaXMGZ29vZ2xlA2NvbQAAAQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:44 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:44.937275 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBGFwaXMGZ29vZ2xlA2NvbQAAHAABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:48 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:48.888183 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA29ncwZnb29nbGUDY29tAmJyAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:48 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:48.891071 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA29ncwZnb29nbGUDY29tAmJyAAABAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:48 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:48.891071 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA29ncwZnb29nbGUDY29tAmJyAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:48 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:48.891075 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA29ncwZnb29nbGUDY29tAmJyAAABAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:48 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:48.892183 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA29ncwZnb29nbGUDY29tAmJyAABBAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:52.431814 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABCGRvd25sb2FkCXdpcmVndWFyZANjb20AAAEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:52.432027 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABCGRvd25sb2FkCXdpcmVndWFyZANjb20AABwAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.017956 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.017998 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.017998 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.018067 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.018160 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.018375 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:17:54 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:17:54.018669 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:18:18 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:18:18.995564 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:18:20 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:18:20.865958 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBWluYm94Bmdvb2dsZQNjb20AAAEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:18:23 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:18:23.792565 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABB2FuZHJvaWQEYXBpcwZnb29nbGUDY29tAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:18:23 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:18:23.795506 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABB2FuZHJvaWQEYXBpcwZnb29nbGUDY29tAAABAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.580940 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBGFwaXMGZ29vZ2xlA2NvbQAAHAABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.580940 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABBGFwaXMGZ29vZ2xlA2NvbQAAQQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.680295 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABC2ZlZWRiYWNrLXBhCGNsaWVudHM2Bmdvb2dsZQNjb20AAAEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.680292 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABC2ZlZWRiYWNrLXBhCGNsaWVudHM2Bmdvb2dsZQNjb20AABwAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.682566 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABC2ZlZWRiYWNrLXBhCGNsaWVudHM2Bmdvb2dsZQNjb20AABwAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.682786 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABC2ZlZWRiYWNrLXBhCGNsaWVudHM2Bmdvb2dsZQNjb20AAEEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:52 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:52.682879 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABC2ZlZWRiYWNrLXBhCGNsaWVudHM2Bmdvb2dsZQNjb20AAAEAAQAAKQgAAACAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:53 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:53.234373 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA2VjcwZvZmZpY2UDY29tAAAcAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:53 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:53.234373 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABA2VjcwZvZmZpY2UDY29tAAABAAEAACkIAAAAgAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:57 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:57.644862 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABCGdhbWVwbGF5BWludGVsA2NvbQAAHAABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"
Sun Jun 29 11:19:57 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:57.646961 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"
Sun Jun 29 11:19:57 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:19:57.647059 ERROR response received addr=https://dns.adguard-dns.com:443/dns-query proto=udp status="requesting https://dns.adguard-dns.com:443/dns-query: Get_0rtt \"https://dns.adguard-dns.com:443/dns-query?dns=AAABIAABAAAAAAABCGdhbWVwbGF5BWludGVsA2NvbQAAAQABAAApCAAAAIAAAAA\": context deadline exceeded (Client.Timeout exceeded while awaiting headers

There have been no changes to my settings, so I'm a bit lost as to what could be causing these errors.

As I reported, I use dnsmasq and adguardhome, where in the dnsmasq cfgs, I redirect (forward) the queries to port 54 of adguardhome, and in adguard, I have settings to read the ptrs pointing to port 53 of dnsmasq, like this:

192.168.15.1 is my router...

I noticed some errors with the adguard Quic server, like these, I'm researching in parallel what this could be:

Sun Jun 29 11:25:37 2025 daemon.err AdGuardHome[27956]: 2025/06/29 14:25:37.731594 ERROR response received addr=quic://dns.adguard-dns.com:853 proto=udp status="opening stream: failed to open a QUIC stream: context deadline exceeded"

agh needs unfiltered upstream like cloudflare or google

My Upstrems servers are configured like this:

[/hsh/]192.168.15.1:54
[//]192.168.15.1:54
[/in-addr.arpa/]192.168.15.1
[/ip6.arpa/]192.168.15.1
1.1.1.1
1.0.0.1
2606:4700:4700::1111
2606:4700:4700::1001
https://dns.cloudflare.com/dns-query
tls://one.one.one.one

And the error remains there in the log...

I´ve removed completely adguard from my setup...

I left home this afternoon with my family to visit a relative and when I came back the internet was completely down.

I removed everything and will reconfigure it soon with more time...

Thanks for all your help.

It is not help...
share agh upstreams and dnsmasq upstreams if new setup does not work out. Also nextdns can be used as alternative, it has tracker blocking feed, even you can use that with generic doh/dot cients.

1 Like

I remove completely agh in this time...

I'm studyinf better adg configs to reconfigure correctly

When I solved my trouble with OpenVpn, that connects and works goods only with internet sites but not with internal hosts, I will return to adg...

Wireguard works very nice, both internal and externals sites...

But, I need 2 vpns working, lol.

Thanks for support brada4