# F5 - System Times of Devices Do Not Match **URL:** \ **Category:** Technical Forums\ **Tags:** application-delivery\ **Created:** [September 25, 2024, 6:17am UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187 "2024-09-25T06:17:49Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Preet\_pk](https://avatars.discourse-cdn.com/v4/letter/p/a698b9/32.png) [@Preet\_pk](https://community.f5.com/u/Preet_pk)\ **Post date:** [September 25, 2024, 6:17am UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/1 "2024-09-25T06:17:49Z")
Hi, I need some help, as i am seeing below “System times of devices do not match” error in F5 running on HA. Please let me know how to troubleshoot this without impacting F5 production traffic. Below error: System Times of Devices Do Not Match One or more system times of the devices in the device trust do not match the system time of the local device. Auto or manual device group sync operations may fail. Verify that the [NTP Settings](https://10.46.11.56/tmui/Control/jspmap/tmui/system/device/properties_ntp.jsp) on all devices are properly configured and that the system times are equal. - /Common/F5primary.local is 6 seconds ahead ---
**Author:** ![zamroni777](https://d1p9zq3aats0t8.cloudfront.net/user_avatar/community.f5.com/zamroni777/32/1473_2.png) [@zamroni777](https://community.f5.com/u/zamroni777)\ **Post date:** [September 25, 2024, 4:45pm UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/2 "2024-09-25T16:45:30Z")
have you set both active and standby node to ntp time server with correct time? if the difference to ntp server is less than 1000 seconds, the system should drift the time by itself until they match the ntp server. larger than 1000 seconds will need restart ntpd. > **[myF5](https://my.f5.com/manage/s/article/K35119082)** ---
**Author:** ![Amine\_Kadimi](https://avatars.discourse-cdn.com/v4/letter/a/b9e5f3/32.png) [@Amine\_Kadimi](https://community.f5.com/u/Amine_Kadimi)\ **Post date:** [September 27, 2024, 11:07am UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/3 "2024-09-27T11:07:04Z")
Hi, You need to have NTP servers configured on your devices (at least one server but preferably more). Then checkfrom big-ip linux cli (not tmsh) whether the system can sync to one of the NTP servers using the command: ntpq -np You should see your NTP servers list, and one of them must have a \* char before its address. For more troubleshooting details: [myF5](https://my.f5.com/manage/s/article/K10240) ---
**Author:** ![Preet\_pk](https://avatars.discourse-cdn.com/v4/letter/p/a698b9/32.png) [@Preet\_pk](https://community.f5.com/u/Preet_pk)\ **Post date:** [September 30, 2024, 6:41am UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/4 "2024-09-30T06:41:00Z")
Thanks for the response,  HA Active F5 is showing 7 sec ahead. Will wait for the system to sync time with ntp server automatically. In case time sync still fails, will restart ntpd daemon cause any production impact or any HA impact. ---
**Author:** ![Aswin\_mk](https://d1p9zq3aats0t8.cloudfront.net/user_avatar/community.f5.com/aswin_mk/32/5701_2.png) [@Aswin\_mk](https://community.f5.com/u/Aswin_mk)\ **Post date:** [September 30, 2024, 6:05pm UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/5 "2024-09-30T18:05:22Z")
@Preet_pk Please go through the link -[myF5](https://my.f5.com/manage/s/article/K7017) Impact of the restart also mentioned in the link Br Aswin ---
**Author:** ![JoseLabra](https://d1p9zq3aats0t8.cloudfront.net/user_avatar/community.f5.com/joselabra/32/6084_2.png) [@JoseLabra](https://community.f5.com/u/JoseLabra)\ **Post date:** [September 30, 2024, 9:22pm UTC](https://community.f5.com/t/f5-system-times-of-devices-do-not-match/75187/6 "2024-09-30T21:22:52Z")
Hi! how are you? Do you try this? > **[myF5](https://my.f5.com/manage/s/article/K50322202)** You should consider apply the configuration change in maintenance window best regards!