in ops manager it s blocked on step" Download":
Hi Olivier,
Based on the error log message, essentially it's failing to fetch version 3.2.6 on disk or, there is some network issue preventing OpsManager to download. See also OpsManager: Change the version of MongoDB
Please note that OpsManager Application is part of the MongoDB Enterprise edition, which is a commercially supported product.
If your company/organisation already has a commercial subscription and you have further questions about running OpsManager, you should open a case in the Commercial Support Portal.
Alternatively if you are evaluating MongoDB Enterprise and interested, send me a private message with your contact details and I can request a MongoDB Account Executive to contact you.
Best regards,
Wan.