Enable Bitlocker fails - File not found

[pasfam]

I just recently acquired a refurbished HP ZBook with specs as below
I have tried to enable bitlocker but keeps reporting 'The system cannot find the file specified' The documented remedy to rename C:\Windows\System32\Recovery\ReAgent. xml to Old does not help

Please help

My system:
Operating System
Windows 10 Pro 64-bit
Version 20H2
Installed on ‎07 ‎Sep ‎2020
CPU
Intel Core i7 5500U @ 2.40GHz 55 °C
Broadwell-U 14nm Technology
RAM
8,00GB Single-Channel DDR3 @ 798MHz (11-11-11-28)
Motherboard
Hewlett-Packard 2216 (U3E1)
Graphics
Generic PnP Monitor (1366x768@60Hz)
Intel HD Graphics 5500 (HP)
1024MB ATI AMD FirePro M4150 (HP) 32 °C
CrossFire Disabled
Storage
238GB Netac SSD 240GB (SATA (SSD)) 40 °C

 

[Bighorn]

I put bitlocker in the Search box on the Taskbar and got this:

 

[pasfam]

By clicking 'Turn on Bitlocker' is where the problem starts. That is when it reports 'file not found'