CRM 4.0 Login failes ‘key expired’

On our CRM 4.0 Dev environment we experienced the following behaviour:

When opening CRM this message appeared:

The key specified to compute a hash value is expired, only active keys are valid.  Expired Key : CrmKey…

After searching on the machine I found that the Async service did not run, I started it but restarting the Async service (full name Microsoft CRM Asynchronous Processing Service) didn’t fix it until I did an IISRESET, and this solved the issue.

There is also an alternative solution.

On the server (remote dektop) do the following “C:\Program Files\Microsoft Dynamics CRM\Tools >Microsoft.Crm.Tools.WRPCKeyRenewal.exe /R”

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