Supported Calendar types

License Activation Failed Due to Unsupported Calendar Type

If you encounter a license activation issue, ensure your system is set to the Gregorian calendar. Follow these steps to configure this setting in Windows.

  1. Change Regional Format to a Gregorian Calendar Region

Skip this step if system accounts are using a different regional format that the current user.
  • Go to "Start" → "Control Panel"
  • Under the "Clock and Region" section select “Change date, time, or number formats”
  • Select a region that uses the Gregorian calendar by default
  1. Copy Settings

Skip this step if system accounts are using a different regional format that the current user.
  • In the "Administrative" tab select "Copy settings..."
  • Check “Welcome screen and system accounts”
  • Click "OK"
  1. Change Regional Format to Desired Region with Gregorian and Non-Gregorian Calendar Options
  • Go to "Start" → "Control Panel"
  • Under the "Clock and Region" section select “Change date, time, or number formats”
  • Choose a region with both Gregorian and non-Gregorian calendar options
  1. Copy Settings
  • Go to "Administrative" tab
  • Select "Copy settings..." and “Welcome screen and system accounts”
  1. Restart MetaDefender Managed File Transfer Services
  • Go to "Start" → "Control Panel" → "Services"
  • Restart the "OPSWAT MetaDefender Managed File Transfer Helper" service
  1. Activate License

After restarting the MFT services, go to the "License Activation" page and attempt to activate your license again.

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Supported Calendar typesLicense Activation Failed Due to Unsupported Calendar TypeChange Regional Format to a Gregorian Calendar Region