What is .CSR file extension?
File created as a signing request for a digital certificate; contains an encrypted block of text that identifies the applicant of the certificate; includes encrypted data for country, state, organization, domain, email address, and public key; used by a Certificate Authority to establish proof of identity for Web sites.
CSR files are generated using a public and private key. The public key is included in the CSR file, and the private key is used to digitally sign the CSR file.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.