"CRC doesn't match. File is corrupted" when installing Arduino MBED OS Nano Boards

Development Tools IDE 1.x
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Good morning everyone,
I have installed the last version of Arduino IDE (1.8.19) on Windows 10 to use an Arduino Nano 33 BLE Sense.
I have tried to download the "Arduino MBED OS Nano Boards", which is required to use the Arduino Nano Sense. However, the error "CRC doesn't match. File is corrupted. It may be a temporary problem, please retry later " appears.
I know that this problem was already brought up by many, but none of those solutions helped in my case.

In particular:

  • I have tried to reinstall the Arduino IDE in the current version deleting also the folder Arduino15 in "C:\Users\XXX\AppData\Local"

  • As above, but with an older version of Arduino IDE

  • As above, but using the zip file option

  • I have tried to install all the versions of "Arduino MBED OS Nano Boards", from 2.0.0 to 2.7.2

  • I have tried to put the latest version of ArduinoJson - Arduino Libraries in \Arduino15\staging\packages

  • I have tried all these procedures on another PC (also Windows 10)

  • I checked that the correct port (COM) was selected in the Tools menu

Any ideas about it? Thank you in advance for your help!

EDIT: I have also tried to install it without the firewall and with another Wi-Fi connection.

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EDIT: I solved the problem switching off the firewall and the antivirus. I also executed Arduino IDE with administrator priviledge. Hope it will help other people in the future :slight_smile:

1 Like
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I'm also experiencing the same error with the version Arduino IDE 1.8.19.
I tried the steps suggested above but without any luck. Please suggest any other alternatives

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