# Loading Singpass root signing certificate In order to verify if a Sign with Singpass signature is valid, see [here](/user-guides/certificate-guide/verifying-sign-with-singpass-signatures.md). {% hint style="info" %} From February 2025 onwards, some Singpass Signing Certificates will be issued by a new Root CA. Please ensure that you load **both Root CA Certificates** in your Adobe Acrobat Reader in order to validate your documents. {% endhint %} Before that, the Singpass root signing certificates must be installed on your device. If you do not have the 2 Singpass root signing certificates on your device, **please follow the steps in** [**Sign with Singpass' guide**](https://docs.sign.singpass.gov.sg/for-users/verifying-sign-with-singpass-signatures/loading-singpass-root-signing-certificate)**.** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guide.signify.gov.sg/user-guides/certificate-guide/loading-singpass-root-signing-certificate.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.