whats Security deny Err:0x2017 in fastboot

My device(HTC desire 526g+) is in soft brick state and i can only access fast boot but whenever i try to flash recovery or any other thing from fastboot it display :-


sending 'recovery' (5766 KB)...
OKAY [ 0.179s]
writing 'recovery'...
FAILED (remote:
Security deny - Err:0x2017
)
finished. total time: 0.196s

Can you help me please.

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