Knowledge base | OneStepCheckout Help Center

Our help center is your resource for anything related to OneStepCheckout.

Top Help Articles

  1. Installation guide for M2
  2. Changelogs (latest 4.5.8) - M1
  3. Ogone extension integration
  4. PayPal hosted pro

General information

  1. Changelogs (latest 4.5.8) - M1
  2. Changelogs (latest 5.0.021) - M2
  3. Transfer of a OneStepCheckout License
  4. Upgrade to version 4.* from lower versions - M1
  5. Uninstalling OneStepCheckout - M1

Getting started

  1. Installation guide
  2. Installation guide for M2
  3. Customization guide
  4. User manual
  5. Upgrade guide
View all 11

Frontend customisation

  1. Ebizmarts SagePaySuite and MailChimp
  2. Number of street fields
  3. Save email in quote the soonest for abandoned cart extension
  4. Add duplicate email confirmation field
  5. Configuring Google Places Address Autocomplete
View all 20

Backend issues

  1. Admin section throws error
  2. Admin shipping not showing
  3. Admin access denied
  4. Administration problems- I am getting a "Notice: Undefined index: model" error

Mobile devices

  1. Modal issues mobile

Localisation

  1. Changing label texts and other translations
  2. Download translations

Payment methods

  1. PayPal hosted pro
  2. Ogone extension integration
  3. Credit card payments are failing to validate
  4. Blank on failed payment
  5. Add-ipayment-support
View all 13

Troubleshooting errors

  1. Browser autofill
  2. Troubleshooting after upgrade
  3. Purchasing serial keys for new domains
  4. Serial not working
  5. Getting blank page
View all 9
Here you will always find an up-to-date installation-, upgrade- and customization-guides, as well as answers to common questions and problems. Use the links and search above to go to the desired destination.