And the relevant log lines
2020-04-17 11:50:03.521 +10:00 [INF] Executing ContentResult with HTTP Response ContentType of application/javascript
2020-04-17 11:50:03.523 +10:00 [INF] Executed action Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.AbpApplicationConfigurationScriptController.Get (Volo.Abp.AspNetCore.Mvc) in 453.2645ms
2020-04-17 11:50:03.524 +10:00 [INF] Executed endpoint 'Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.AbpApplicationConfigurationScriptController.Get (Volo.Abp.AspNetCore.Mvc)'
2020-04-17 11:50:03.524 +10:00 [INF] Request finished in 475.5367ms 200 application/javascript
2020-04-17 11:50:09.044 +10:00 [INF] Request starting HTTP/2.0 POST https://localhost:44315/Account/Login?handler=ExternalLogin application/x-www-form-urlencoded 225
2020-04-17 11:50:09.046 +10:00 [INF] CORS policy execution failed.
2020-04-17 11:50:09.046 +10:00 [INF] Request origin https://localhost:44315 does not have permission to access the resource.
2020-04-17 11:50:09.053 +10:00 [INF] No CORS policy found for the specified request.
2020-04-17 11:50:09.055 +10:00 [INF] Executing endpoint '/Account/Login'
2020-04-17 11:50:09.056 +10:00 [INF] Route matched with {page = "/Account/Login", area = "", action = "", controller = ""}. Executing page /Account/Login
2020-04-17 11:50:09.129 +10:00 [INF] Executing handler method Volo.Abp.Account.Public.Web.Pages.Account.LoginModel.OnPostExternalLogin - ModelState is "Invalid"
2020-04-17 11:50:09.136 +10:00 [INF] Executed handler method OnPostExternalLogin, returned result Microsoft.AspNetCore.Mvc.ChallengeResult.
2020-04-17 11:50:09.138 +10:00 [INF] Executing ChallengeResult with authentication schemes (["AzureAD"]).
2020-04-17 11:50:09.905 +10:00 [INF] AuthenticationScheme: AzureADOpenID was challenged.
2020-04-17 11:50:09.906 +10:00 [INF] Executed page /Account/Login in 849.9002ms
2020-04-17 11:50:09.906 +10:00 [INF] Executed endpoint '/Account/Login'
2020-04-17 11:50:10.018 +10:00 [DBG] Added 0 entity changes to the current audit log
2020-04-17 11:50:10.018 +10:00 [DBG] Added 0 entity changes to the current audit log
2020-04-17 11:50:10.021 +10:00 [INF] Request finished in 976.3547ms 302
2020-04-17 11:50:10.666 +10:00 [INF] Request starting HTTP/2.0 POST https://localhost:44315/signin-azuread-oidc application/x-www-form-urlencoded 2820
2020-04-17 11:50:10.667 +10:00 [INF] CORS policy execution successful.
2020-04-17 11:50:11.580 +10:00 [INF] AuthenticationScheme: Identity.External signed in.
2020-04-17 11:50:11.583 +10:00 [INF] Request finished in 916.6524ms 302
2020-04-17 11:50:11.608 +10:00 [INF] Request starting HTTP/2.0 GET https://localhost:44315/Account/Login?handler=ExternalLoginCallback
2020-04-17 11:50:11.613 +10:00 [INF] Executing endpoint '/Account/Login'
2020-04-17 11:50:11.614 +10:00 [INF] Route matched with {page = "/Account/Login", area = "", action = "", controller = ""}. Executing page /Account/Login
2020-04-17 11:50:11.628 +10:00 [INF] Executing handler method Volo.Abp.Account.Public.Web.Pages.Account.LoginModel.OnGetExternalLoginCallbackAsync - ModelState is "Valid"
2020-04-17 11:50:11.632 +10:00 [WRN] External login info is not available
2020-04-17 11:50:11.636 +10:00 [INF] Executed handler method OnGetExternalLoginCallbackAsync, returned result Microsoft.AspNetCore.Mvc.RedirectToPageResult.
2020-04-17 11:50:11.637 +10:00 [INF] Executing RedirectToPageResult, redirecting to ./Login.
2020-04-17 11:50:11.638 +10:00 [INF] Executed page /Account/Login in 23.2993ms
2020-04-17 11:50:11.638 +10:00 [INF] Executed endpoint '/Account/Login'
2020-04-17 11:50:11.638 +10:00 [INF] Request finished in 30.0089ms 302
2020-04-17 11:50:11.646 +10:00 [INF] Request starting HTTP/2.0 GET https://localhost:44315/Account/Login
2020-04-17 11:50:11.650 +10:00 [INF] Executing endpoint '/Account/Login'
2020-04-17 11:50:11.652 +10:00 [INF] Route matched with {page = "/Account/Login", area = "", action = "", controller = ""}. Executing page /Account/Login
2020-04-17 11:50:11.665 +10:00 [INF] Executing handler method Volo.Abp.Account.Public.Web.Pages.Account.LoginModel.OnGetAsync - ModelState is "Valid"
2020-04-17 11:50:11.668 +10:00 [INF] Executed handler method OnGetAsync, returned result .
2020-04-17 11:50:11.669 +10:00 [INF] Executing an implicit handler method - ModelState is "Valid"
2020-04-17 11:50:11.669 +10:00 [INF] Executed an implicit handler method, returned result Microsoft.AspNetCore.Mvc.RazorPages.PageResult.
2020-04-17 11:50:11.751 +10:00 [DBG] Added bundle 'Lepton.Global' to the page in 2.60 ms.
2020-04-17 11:50:11.760 +10:00 [DBG] Added bundle 'Lepton.Global' to the page in 3.66 ms.
2020-04-17 11:50:11.761 +10:00 [INF] Executed page /Account/Login in 109.2622ms
2020-04-17 11:50:11.761 +10:00 [INF] Executed endpoint '/Account/Login'