Issue reported:  The account certificate is not valid and may be expired. 0x80cf4017

Error 0x80cf4017: "The account certificate is not valid and may be expired,."

Cause: The client software is out of date.

Resolution:

1. Sign in to https://admin.manage.microsoft.com.

2. Go to PC MANAGEMENT > Legacy PC Management.

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Haresh Hirani
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