File extension DER (.DER) information

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Windows cannot open DER files?

If Windows is unable to open file extension .DER you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a free registry scan.

Appropriate program:

DER is a file extension associated with DER Encoded X509 Certificate. Incorrect associations are the cause of many file extension errors. Scan your system to prevent, identify and repair DER file extension association errors.

Recommendations for file extension DER users:

General information

Common errors/





File extension DER scan

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You are currently viewing the detail page for DER file extension. This page contains a detailed description of the DER file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.
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