Foreruner no longer connects

Hello,

For a forerunner 30 watch, recently (2 or 3 months) I can no longer access my activities on my PC.

I'm asked “you must format the D drive before using it” when I connect the cable from my watch to the PC.

I can't install the latest version of Garmin Connect either (it searches indefinitely).

It seems that my PC doesn't detect my Garmin watch.

All this is very annoying because I only buy Garmin because I can record my activities...

Please help me

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