> For the complete documentation index, see [llms.txt](https://mabna-cloud.gitbook.io/mabnatechtips/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mabna-cloud.gitbook.io/mabnatechtips/citrix-add-certificate.md).

# citrix add certificate

### Instructions

1. Download CA certificate in PEM format. 
2. Save the certificate with .crt file extension. 
3. Switch to root user and copy the .crt CA certificate file to /opt/Citrix/ICAClient/keystore/cacerts/ folder. 
4. Make sure the CA certificate file is owned by Root user and Group, and it has -rw-r--r-- or 644 as the File permissions. 
5. Run  /opt/Citrix/ICAClient/util/ctx\_rehash 

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Note: Location of /opt/Citrix/ICAClient/keystore/cacerts/ and /opt/Citrix/ICAClient/util/ctx\_rehash may vary depending on the distribution and location you would be installing Citrix Worskpace App for Linux. Above location is on default Ubuntu Distribution installation directory /opt/Citrix/ICAClient/