The registry file a0001733.dll error is associated with HTTP Extensions for Windows NT, which is a component of IIS (Internet Information Services) version 5.0 by Microsoft Corporation.

It is unknown if this error is associated with spyware or Trojans. Authentication processes can be corrupted by viruses or spyware. Registry files commonly get misplaced, corrupted, damaged, or deleted during the installation or removal of programs.

The only way to tell if a registry error is a security threat is to find the place it is executed from or originates. This task isn’t easy, even for some of the most experienced computer users.

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