Windows build seems to have trouble, don't know if working as lacking windows....

[waterwin]

For me it works fine on Win10 with NanoVNA-H4
Windows binary for 64Bit systems in NanoVNASaver.x64.zip 0.5.5
Latest firmware on a freshly bought device v1.2.14

Board: NanoVNA-H 4
2019-2022 Copyright NanoVNA.com
based on @DiSlord @edy555 ... source
Licensed under GPL.
Version: 1.2.14 [p:401, IF:12k, ADC:384k, Lcd:480x320]
Build Time: Aug 31 2022 - 13:39:49
Architecture: ARMv7E-M Core Variant: Cortex-M4F
Platform: STM32F303xC Analog & DSP