I just spotted that our NCM is kicking the following out in every job it runs...
"Unable to save results to file "E:\Solarwinds_Logs\Weekly Archive - "Client_Name_Here" 2022-02-28 Config Backup.htm": Access to the path 'E:\Solarwinds_Logs\Weekly Archive - "Client_Name_Here" 2022-02-28 Config Backup.htm' is denied."
However, if I edit any of the jobs (it appears to be all of them) then I can validate that path no problem at all. e.g.

Any ideas?
For the record, the jobs I've looked through, then this appeared to have started on or after week beginning Jan 24th 2022 - that was the week we upgraded to 2020.2.6 HF3
EDIT: Just found one that goes back further so not HF3 related.