# TIME\_ERROR: 0x41: Clock Unsynchronized **URL:** https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575 **Category:** Uncategorized **Created:** [November 8, 2022, 6:10am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575 "2022-11-08T06:10:11Z") **Posts on this page:** 10 **Page:** 1
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 8, 2022, 6:10am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/1 "2022-11-08T06:10:11Z")
Hello, Replaced 2 NTP clients with new clients . But when the new virtual appliance comes up they are not able to sync with the NTP server and are stuck at .INIT. # remote refid st t when poll reach delay offset jitter 10.41.2.123 .INIT. 16 u - 256 0 0.000 +0.000 0.000 10.132.30.50 .INIT. 16 u - 256 0 0.000 +0.000 0.000 10.80.15.64 .INIT. 16 u - 256 0 0.000 +0.000 0.000 10.225.3.7 .INIT. 16 u - 256 0 0.000 +0.000 0.000 However ntpdate -q to the above servers shows startum 1 and less offset. ping to the server also works fine and there is no firewall rules also. ash-4.0# ntpq -c rv `1associd=0 status=0615 leap_none, sync_ntp, 1 event, clock_sync, 2version="ntpd 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1)", 3processor="x86_64", system="Linux/4.9.58", leap=00, stratum=3, 4precision=-24, rootdelay=1.419, rootdisp=7.872, refid=169.254.0.1, 5reftime=e70c0471.3aa81854 Tue, Nov 1 2022 15:47:45.229, 6clock=e70c04a7.1c419589 Tue, Nov 1 2022 15:48:39.110, peer=31571, tc=6, 7mintc=3, offset=-0.130382, frequency=+14.344, sys_jitter=0.000000, 8clk_jitter=0.036, clk_wander=0.001` I read about changing kernel timercounters: > [@Clock Unsynchronized](https://community.ntppool.org/t/clock-unsynchronized/1855): > > hello i have device with android running. ntpd and ntpq is available in device and i have configure ntp.conf file with my local linux machine. whenever i start ntpd -d it shows kernel reports TIME\_ERROR: 0x2041: Clock Unsynchronized. mine time is synchronizes as per date or rtc but after hour it reset to an hwclock and then driftfile is no more available, i had investigate a bit this and found it might be ntp\_adjtime() issue and frequency fail to set, any idea about clock Unsynchronized error. … what can i check in my client which has fedora running ? There are other virtual appliance connected to same NTP server and are able to sync. ---
### Author: ![NTPman](https://sea2.discourse-cdn.com/flex016/user_avatar/community.ntppool.org/ntpman/32/450_2.png) [@NTPman](https://community.ntppool.org/u/NTPman) #### Post date: [November 9, 2022, 10:02am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/2 "2022-11-09T10:02:20Z")
@aaa2022, welcome to the community! What does the command `grep ntpd /var/log/messages` give? ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 10, 2022, 6:09am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/3 "2022-11-10T06:09:43Z")
> [@NTPman](#): > > grep ntpd /var/log/message Hello, This is what is see in log… ntpd exiting continuosly… ```auto 95 2022-11-02T00:46:18-05:00 daemon host.com ntpd[7058]: notice ntpd 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1): Starting 96 2022-11-02T00:46:18-05:00 daemon host.com ntpd[7058]: notice Command line: /usr/bin/ntp d -x -a -c /tmpfs/ntp.conf -f /storage/etc/ntp.drift 97 2022-11-02T00:46:18-05:00 daemon host.com ntpdm ntpd[7058]: notice -------------------------- -------------------------- 98 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7058]: notice ntp-4 is maintained by Net work Time Foundation, 99 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7058]: notice Inc. (NTF), a non-profit 5 01(c)(3) public-benefit 100 2022-11-02T00:46:18-05:00 daemon host.com ntpdm ntpd[7058]: notice corporation. Support and training for ntp-4 are 101 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7058]: notice available at https://www.n wtime.org/support 102 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7058]: notice -------------------------- -------------------------- 103 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info proto: precision = 0.055 use c (-24) 104 2022-11-02T00:46:18-05:00 daemon host.com ntpdm ntpd[7060]: info basedate set to 2021-07-17 105 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info gps base set to 2021-07-18 ( week 2167) 106 2022-11-02T00:46:18-05:00 daemon host.com ntpdm ntpd[7060]: info Listen and drop on 0 v6wildc ard [::]:123 107 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listen and drop on 1 v4wildc ard 0.0.0.0:123 108 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listen normally on 2 lo 127. 0.0.1:123 109 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listen normally on 3 eth1 10 .80.39.34:123 110 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listen normally on 4 tun2 16 9.254.0.9:123 111 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listen normally on 5 lo [::1]:123 112 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info Listening on routing socket on fd #22 for interface updates 113 2022-11-02T00:46:18-05:00 daemon host.com ntpd ntpd[7060]: info kernel reports TIME_ERROR: 0 x41: Clock Unsynchronized 114 2022-11-02T00:46:18-05:00 daemon host.com ntpd [7060]: info kernel reports TIME_ERROR: 0 x41: Clock Unsynchronized 115 2022-11-02T00:48:31-05:00 daemon host.com ntpd ntpdate[8833]: notice step time server 10.41. 2.123 offset +0.555532 sec 116 2022-11-02T00:50:03-05:00 daemon host.com ntpd ntpdate[10020]: notice step time server 10.41 .2.123 offset +0.003425 sec 117 2022-11-02T00:50:26-05:00 daemon host.com ntpd ntpdate[10367]: notice step time server 10.13 2.30.50 offset +0.000795 sec 118 2022-11-02T00:50:49-05:00 daemon host.com ntpd ntpdate[10624]: notice step time server 10.80 .15.64 offset +0.000838 sec 119 2022-11-02T00:51:14-05:00 daemon host.com ntpd ntpdate[10923]: notice step time server 10.22 5.3.7 offset +0.001479 sec 120 2022-11-02T00:54:17-05:00 daemon host.com ntpd ntpd[7060]: err Invalid-NAK error at 478 10.8 0.39.34<-172.16.109.165 121 2022-11-02T01:02:22-05:00 daemon host.com ntpd ntpd[7060]: err Invalid-NAK error at 964 10.8 0.39.34<-172.16.109.168 122 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpd[7060]: notice ntpd exiting on signal 15 (Terminated) 123 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpd[7060]: info 10.41.2.123 local addr 10.80 .39.34 -> 124 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpd[7060]: info 10.132.30.50 local addr 10.8 0.39.34 -> 125 2022-11-02T01:03:44-05:00 daemon host.com ntpdm ntpd[7060]: info 10.80.15.64 local addr 10.80 .39.34 -> 126 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpd[7060]: info 10.225.3.7 local addr 10.80. 39.34 -> 127 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpd[7060]: info 127.127.1.1 local addr 127.0 .0.1 -> 128 2022-11-02T01:03:44-05:00 daemon host.com ntpd ntpdate[20922]: notice ntpdate 4.2.8p15@1.372 8-o Thu Jul 29 19:56:51 UTC 2021 (1) 130 2022-11-02T01:03:51-05:00 daemon host.com ntpd ntpd[21050]: notice ntpd 4.2.8p15@1.3728-o Th u Jul 29 19:56:51 UTC 2021 (1): Starting 131 2022-11-02T01:03:51-05:00 daemon host.com ntpd ntpd[21050]: notice Command line: /usr/bin/nt pd -x -a -c /tmpfs/ntp.conf -f /storage/etc/ntp.drift ``` ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 11, 2022, 10:58am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/4 "2022-11-11T10:58:53Z")
> [@aaa2022](#): > > `err Invalid-NAK error at` Is " ``` err Invalid-NAK error at ```auto what authentication parameters we need to check? ``` ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 14, 2022, 9:04am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/5 "2022-11-14T09:04:48Z")
Is the ntpd crashing because of TIME\_ERROR or Invalid-NAK? what parameters can we check? ---
### Author: ![alica](https://sea2.discourse-cdn.com/flex016/user_avatar/community.ntppool.org/alica/32/337_2.png) [@alica](https://community.ntppool.org/u/alica) #### Post date: [November 14, 2022, 9:20am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/6 "2022-11-14T09:20:42Z")
> [@aaa2022](#): > > ```plaintext > 2022-11-02T00:54:17-05:00 daemon host.com ntpd ntpd[7060]: err Invalid-NAK error at 478 10.80.39.34<-172.16.109.165 > > ``` Probably because of authentication failure. You shall first make sure your ntpd instance can be operating normally without authentication, then add the authentication key afterwards. ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 24, 2022, 8:54am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/7 "2022-11-24T08:54:21Z")
thanks .tried by removing the authentication but still see the issue. ntp is still stuck at .INIT. And i see the “TIME\_ERROR” ```auto 405631:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: notice ntpd exiting on signal 15 (Terminated) 405632:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 10.41.2.123 local addr 10.162.37.100 -> 405633:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 10.132.30.50 local addr 10.162.37.100 -> 405634:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 10.80.15.64 local addr 10.162.37.100 -> 405635:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 10.225.3.7 local addr 10.162.37.100 -> 405636:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 169.254.0.1 local addr 169.254.0.12 -> 405637:2022-11-23T00:04:09-06:00 daemon host.com ntpd[31591]: info 127.127.1.1 local addr 127.0.0.1 -> 405638:2022-11-23T00:04:09-06:00 daemon host.com ntpdate[31430]: notice ntpdate 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1) 405647:2022-11-23T00:04:16-06:00 daemon host.com ntpdate[31430]: notice adjust time server 10.80.15.64 offset +0.000136 sec 405648:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice ntpd 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1): Starting 405649:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice Command line: /usr/bin/ntpd -x -a -c /tmpfs/ntp.conf -f /storage/etc/ntp.drift 405650:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice ---------------------------------------------------- 405651:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice ntp-4 is maintained by Network Time Foundation, 405652:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice Inc. (NTF), a non-profit 501(c)(3) public-benefit 405653:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice corporation. Support and training for ntp-4 are 405654:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice available at https://www.nwtime.org/support 405655:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31556]: notice ---------------------------------------------------- 405656:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info proto: precision = 0.056 usec (-24) 405657:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info basedate set to 2021-07-17 405658:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info gps base set to 2021-07-18 (week 2167) 405659:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listen and drop on 0 v6wildcard [::]:123 405660:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listen and drop on 1 v4wildcard 0.0.0.0:123 405661:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listen normally on 2 lo 127.0.0.1:123 405662:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listen normally on 3 eth1 10.162.37.100:123 405663:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listen normally on 4 tun2 169.254.0.12:123 405664:2022-11-23T00:04:16-06:00 daemon host.comntpd[31558]: info Listen normally on 5 lo [::1]:123 405665:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info Listening on routing socket on fd #22 for interface updates 405666:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info kernel reports TIME_ERROR: 0x4041: Clock Unsynchronized 405667:2022-11-23T00:04:16-06:00 daemon host.com ntpd[31558]: info kernel reports TIME_ERROR: 0x4041: Clock Unsynchronized 436041:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: notice ntpd exiting on signal 15 (Terminated) 436042:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 10.41.2.123 local addr 10.162.37.100 -> 436043:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 10.132.30.50 local addr 10.162.37.100 -> 436044:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 10.80.15.64 local addr 10.162.37.100 -> 436045:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 10.225.3.7 local addr 10.162.37.100 -> 436046:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 169.254.0.1 local addr 169.254.0.12 -> 436047:2022-11-23T00:06:21-06:00 daemon host.com ntpd[31558]: info 127.127.1.1 local addr 127.0.0.1 -> 436048:2022-11-23T00:06:21-06:00 daemon host.com ntpdate[959]: notice ntpdate 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1) 440645:2022-11-23T00:06:28-06:00 daemon host.com ntpdate[959]: notice adjust time server 10.80.15.64 offset +0.000173 sec 440646:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice ntpd 4.2.8p15@1.3728-o Thu Jul 29 19:56:51 UTC 2021 (1): Starting 440647:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice Command line: /usr/bin/ntpd -x -a -c /tmpfs/ntp.conf -f /storage/etc/ntp.drift 440648:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice ---------------------------------------------------- 440649:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice ntp-4 is maintained by Network Time Foundation, 440650:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice Inc. (NTF), a non-profit 501(c)(3) public-benefit 440651:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice corporation. Support and training for ntp-4 are 440652:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice available at https://www.nwtime.org/support 440653:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1027]: notice ---------------------------------------------------- 440686:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info proto: precision = 0.055 usec (-24) 440687:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info basedate set to 2021-07-17 440688:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info gps base set to 2021-07-18 (week 2167) 440689:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen and drop on 0 v6wildcard [::]:123 440690:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen and drop on 1 v4wildcard 0.0.0.0:123 440691:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen normally on 2 lo 127.0.0.1:123 440692:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen normally on 3 eth1 10.162.37.100:123 440693:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen normally on 4 tun2 169.254.0.12:123 440694:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listen normally on 5 lo [::1]:123 440695:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info Listening on routing socket on fd #22 for interface updates 440696:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info kernel reports TIME_ERROR: 0x41: Clock Unsynchronized 440697:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info kernel reports TIME_ERROR: 0x41: Clock Unsynchronized 462736:2022-11-23T00:08:26-06:00 daemon host.com ntpd[1029]: notice ntpd exiting on signal 15 (Terminated) ``` ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [November 24, 2022, 8:56am UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/8 "2022-11-24T08:56:23Z")
looks like ntpd is exiting because of below error only… and this happens continously… Ay pointers what details can i check? ```auto kernel reports TIME_ERROR: 0x41: Clock Unsynchronized 440697:2022-11-23T00:06:28-06:00 daemon host.com ntpd[1029]: info kernel reports TIME_ERROR: 0x41: Clock Unsynchronized ``` ---
### Author: ![alica](https://sea2.discourse-cdn.com/flex016/user_avatar/community.ntppool.org/alica/32/337_2.png) [@alica](https://community.ntppool.org/u/alica) #### Post date: [November 24, 2022, 2:09pm UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/9 "2022-11-24T14:09:50Z")
No, the `kernel reports TIME_ERROR: 0x41: Clock Unsynchronized` line is normal in `ntpd` startup. The real problem is the following: ```nohighlight notice ntpd exiting on signal 15 (Terminated) ``` which means something (maybe the `init` script or `systemd` etc.) killed `ntpd` by signaling it. You may debug by start `ntpd` manually with something like: ```auto /usr/sbin/ntpd -g -p /var/run/ntpd.pid ``` Hope this helps. ---
### Author: ![aaa2022](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@aaa2022](https://community.ntppool.org/u/aaa2022) #### Post date: [December 14, 2022, 3:21pm UTC](https://community.ntppool.org/t/time-error-0x41-clock-unsynchronized/2575/10 "2022-12-14T15:21:55Z")
thanks a lot… started ntpd again and used ntpdate -B . Triggered service restart and now able to sync to NTP server.