Old system DLLs cause valid license to fail


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Article ID: Q200002

The information in this article applies to:

  • Direct I/O, version 4.0, 4.1, 4.2, 4.3, 4.4


Despite correct entries in the fields "Name", "Company" and "Key" the shareware reminder appears each time a application is started.


Direct I/O relies on the crypto API built into Windows NT. This API consists of a number of system DLLs which changed with almost every Windows NT service pack. There may be the case where during installation of new software some of them have been overwritten by older versions. Microsoft recommends to reapply the latest Windows NT service pack after every installation.


To resolve this issue, reapply your current Windows NT service pack.

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Last modified: 2016-01-31.
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