Sitecore 9.1 : Installation Issue

Solution

1. Close all open document
2. Open Powershell ISE Admin
3. Uninstall-Package SitecoreInstallFramework
4. Go to C:\Program Files\WindowsPowerShell\Modules
5. Delete SitecoreInstallFramework Folder if available.
6. Download and Unzip “SitecoreInstallFramework.zip”
7. Copy Paste SitecoreInstallFramework Folder into C:\Program Files\WindowsPowerShell\Modules
8. Open Manage User Certificate console click on start button and search Manage User Certificate
9. Go to Personal > Certificates and Remove DO_NOT_TRUST_SitecoreRootCert
10. Go To > Trusted Root Certification Authorities > Certificates > Remove DO_NOT_TRUST_SitecoreRootCert (if more then one available then remove all)
11. Go To > Intermediate Certification Authorities > Certificates > Remove DO_NOT_TRUST_SitecoreRootCert (if more then one available then remove all)
12. Go To > Third-Party Root Certification Authorities > Certificates > Remove DO_NOT_TRUST_SitecoreRootCert (if more then one available then remove all)
13. Restart PC
14. Install Sitecore Again

Are you facing any such types of issue in sitecore. Connect with sitecore development company at info@addact.net