AVSTx8 configuration of Intel Agilex® 7 devices might fail intermittently when using an encrypted bitstream.
The behavior was caused by a race condition that led to SHA mismatch errors. The problem was first found in version 21.4 of the Intel® Quartus® Prime Pro Edition Software.
This problem has been addressed with patches to recent versions of the Intel® Quartus® Prime Pro Edition Software.
Upgrade to the latest device manager firmware patch for Intel® Quartus® Prime Pro Edition Software from the following knowledge article:
What is the latest device firmware for Intel Agilex® 7 and Intel® Stratix® 10 devices?