dotnet dev-certs https --trust -v Trusting the HTTPS development certificate was requested. A confirmation prompt will be displayed if the certificate was not previously trusted. Click yes on the prompt to trust the certificate. Listing 'HTTPS' certificates on 'CurrentUser\My'. '1' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY CN=localhost - A67EEAF595CD2AE44B9296F21BC03B8847D18C0F - 24. 4. 2020 14:51:37 - 24. 4. 2021 14:51:37 - True Checking certificates for validity. Listing valid certificates '1' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY CN=localhost - A67EEAF595CD2AE44B9296F21BC03B8847D18C0F - 24. 4. 2020 14:51:37 - 24. 4. 2021 14:51:37 - True Listing invalid certificates '0' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY Listing 'HTTPS' certificates on 'LocalMachine\My'. '0' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY Checking certificates for validity. Listing valid certificates '0' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY Listing invalid certificates '0' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY Filtering found certificates to those with a subject equal to 'CN=localhost' '1' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY CN=localhost - A67EEAF595CD2AE44B9296F21BC03B8847D18C0F - 24. 4. 2020 14:51:37 - 24. 4. 2021 14:51:37 - True Listing certificates excluded from consideration. '0' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY Found valid certificates present on the machine. '1' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY CN=localhost - A67EEAF595CD2AE44B9296F21BC03B8847D18C0F - 24. 4. 2020 14:51:37 - 24. 4. 2021 14:51:37 - True Selected certificate '1' found matching the criteria. SUBJECT - THUMBPRINT - NOT BEFORE - EXPIRES - HAS PRIVATE KEY CN=localhost - A67EEAF595CD2AE44B9296F21BC03B8847D18C0F - 24. 4. 2020 14:51:37 - 24. 4. 2021 14:51:37 - True Trying to export the certificate. Trusting the certificate on Windows. Adding certificate to the store. There was an error trusting the certificate. Exception message: Access is denied. There was an error trusting HTTPS developer certificate. 

dotnet --info .NET Core SDK (reflecting any global.json): Version: 3.1.103 Commit: 6f74c4a1dd Runtime Environment: OS Name: Windows OS Version: 10.0.19041 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\3.1.103\ Host (useful for support): Version: 3.1.3 Commit: 4a9f85e9f8