iSCSI Discovery Session System login Fail

Following the removal of an unused iSCSI Lun and the creation of a new one, no hosts are able to login via iSCSI
Access was working OK until the modification to remove an old Lun and add a new one and to add a new host ACL.
In QuLog Centre I see Accessed Resources = Discovery Session and Action = Failed to login. I have no CHAP configured.
Have tried reboot of NAS and host, have also tried delete and recreate of iSCSI target.
TS-653A running QTS 5.2.4.3079

Hi @Farrant

To help us further, could you please provide screenshots of your iSCSI settings?
Also, please double-check the correctness of your password. Sometimes, a simple re-entry can resolve connection issues.
If there’s any sensitive information in the screenshots, feel free to hide it before sharing.

Thanks for your cooperation!

Hi Steve
Thanks for reaching out. I have managed to resolve the issue - I am not 100% sure exactly what fixed it. I just went round the same loop of recreating the iSCSI target and enabling and disabling CHAP

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