[How to] Switch to G5 certificates?


2016-11-16 12:46:50 UTC


2017-08-16 17:16:50 UTC


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[How to] Switch to G5 certificates?

Applicable to:

  • Plesk 12.5 for Linux
  • Plesk 11.x for Linux
  • Plesk 12.5 for Windows
  • Plesk 10.x for Linux


How to switch from G2 to G5 in Plesk? This is required as per PayPal vulnerability alert:

https://devblog.paypal.com/paypal-ssl-certificate-changes/ https://www.paypal-knowledge.com/infocenter/index?page=content&widgetview=true&id=FAQ1766&viewlocale=en_US


By G5 it is implied 2048-bit certificates.

This is related to SSL issuer only, not to Plesk, since Plesk will handle any type of SSL used on a site. But we always recommend to use more than 1024-bit encryption. See Plesk 12.5 Administrator Guide for more details.

For detailed steps that need to be taken in order to make sure that sites are switched to 2048-bit certificates (G5), visit:


To check what type of encryption is enabled on a site, use any of public SSL-checkers, for example:


Follow below steps to check if there is G2 or G5 on a domain:

  1. Use any of public SSL-checker links

  2. Enter the website name that should be checked, for example, https://google.com

  3. Click Check

  4. Check the results by searching for the G* or 256 there.

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