The nacol.dll file is a component of the Naming Convention Library created by F-Secure Corporation. F-Secure is an antivirus and security software company originally started in Finland. Most of their products specialize in internet security and safety, though some recent products involve online backups.
An error in the nacol dynamic link library may indicate a problem with one of your F-Secure software programs. You may need to reinstall the program to fix the issue, but because dll file errors often indicate a registry problem, you should first clean your registry.
The registry is a vital database that tells Windows where your files are installed. When your registry has problems, Windows cannot run programs because it cannot find the files it needs.
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