Recently I tried to install the SAMD21 pack automatically using the latest uVision v5.33 and I failed miserably due to pack integrity check error:
Cannot install Pack Microchip.SAMD21_DFP.3.3.98: Pack integrity check failed
So I tried to download the pack manually and every time I do that I get the empty file (you can see the size of 0 when you press the save button so it is not a problem with the AV I guess)
I tried other pack for different MCU vendor and everything is fine.
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