Please Note: As of 4/25/2016 all of Paya's sites have been migrated to SHA-256. Below is a compatibility list for different common operating systems:
| Operating System | Native Support | Manual Configuration | Hotfix | Notes |
| MS Server 2000 | No | No | No | Not Supported |
| MS Server 2003 | No | No | Yes | https://blogs.technet.microsoft.com/pki/2010/09/30/sha2-and-windows/ |
| MS Server 2008 and newer | Yes | No | No | |
| Windows XP | Yes | No | Yes | Windows XP supports SHA256 with SP3. |
| Windows 7 and newer | Yes | No | No | |
| Oracle HTTP Server | Yes | Yes | No | Certificates may need to be manually added to Oracle Wallet. https://docs.oracle.com/cd/B14099_19/web.1012/b14009/ssl.htm |
Click here to download the root, intermediate, and site certificates. The link is not available through IE - please use an alternate browser.
