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"Exception has been thrown by the target of an invocation" when signing onto a database

When signing onto a database, you may get the following error:

Processing error at do_connect

Exception has been thrown by the target of an invocation.

This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms

Discussion

This problem is described by http://support.microsoft.com/kb/911722

There is also some discussion on this at http://blogs.technet.com/b/secguide/archive/2014/04/07/why-we-re-not-recommending-fips-mode-anymore.aspx.

Resolution

You can resolve this problem by making a registry change. Go to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

and set:

fipsalgorithmpolicy = 0

Alternatively

This change can also be done as follows:

Fixed in AQT v10.0.2

This problem has been fixed in AQT v10.0.2. It will still be present in earlier versions of AQT v9 and v10.