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.
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
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"
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
Copy Settings
Go to "Administrative" tab
Select "Copy settings..." and “Welcome screen and system accounts”
Restart MetaDefender Managed File Transfer Services
Go to "Start" → "Control Panel" → "Services"
Restart the "OPSWAT MetaDefender Managed File Transfer Helper" service
Activate License
After restarting the MFT services, go to the "License Activation" page and attempt to activate your license again.