The h323asn1.dll error belongs to Microsoft Internet Security and Acceleration Server 2000 from Microsoft Corporation. Microsoft Internet Security and Acceleration (IS&A) provides remote access to programs and data through a secure connection.
Given the nature of the program associated with the h323asn1.dll file, it is highly recommended to check the legitimacy of the error. This should be done through a registry scan. Not all registry scans are created equal. Unfortunately, some are fake, and they will give you false positives hoping you will purchase the software.
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