Well the thing is I have my file running on another computer in the office, without issues

Every time I try to move it back to the Front Desk computer where it belongs as I  use it for POS these errors start happening again. It's very weird but scaring me that I may be one WU from losing my entire Accounting for the last 20+ years

I am currently running a rebuild File from QB ReBuild service which deleted most of my employees and bank accounts and this file continued with the Encryption errors and I moved it back to my office computer and it runs with no error and I had to spend a couple of days setting up my employees accounts, Items had been deleted out of my bank accounts I had to Reconcile back a full year to get them back in balance. One went back into 2019 to balance these account were all working and in balance before all these Encryption errors and I can't count how many rebuilds of my file and Hub Repairs etc etc. and all the while no issues on this office computer same file. All the same software Windows 10 Pro on Office and on the new computer Front Desk Windows 10 Pro for workstations. All the same Network, Software installed Security software all the same.If anything this office computer has much more software installed.

You mention a 3rd Party file repair? Is there some software that works with QB files and Encryption?