## Problemas con el Certificado R3 Certificate and DST ROOT CA X3

Win + r. and type “certmgr.msc”

Then, delete 3 items :

R3 Certificate and DST ROOT CA X3

To delete, just win + r “certmgr.msc” then go thru :

Trusted Root Certification Authorities \> Certificates Intermediate Certification Authorities \> Certificates Third-party root Certification Authorities \> Certificates Right click, and press delete

To locate the right certificate : Just use Issued By and Expiration Date, search for certificate issued by DST ROOT CA X3, and expired around 29-30 sept 2021.

Install new certificate : Download this : <https://letsencrypt.org/certs/isrgrootx1.der> 8 Double click it. Then, Choose Local Machine, Next Choose Place all Certificates in the following store, and then choose “Trusted Root Certification Authorities” folder Restart your PC