MSAL Azure AD登录后调用/api/authentication/SetAzureUser端点遇404错误

我正尝试使用UserAgentApplication.loginPopup对Azure AD用户进行验证。我们正从ASP.NET MVC应用迁移至Vue.js前端+ASP.NET API后端架构，计划将MSAL获取的accessToken传递给后端以验证用户权限。本地运行时一切正常，但部署到服务器后，调用'/api/authentication/SetAzureUser'端点时出现404错误。

var myMSALObj;

const getLoginPopup = (request) => {
    return myMSALObj.loginPopup(request);
}

const getTokenPopup = (request) => {
    return myMSALObj.acquireTokenSilent(request)
        .catch(() => {
            // 当静默调用失败时，回退到交互式调用
            return myMSALObj.acquireTokenPopup(request)
                .then(tokenResponse => {
                    return tokenResponse;
                }).catch(error => {
                    console.log(error);
                });
        });
}

const azureUserAuthentication = async () => {
    const utilityStore = useUtilityStore();

    try {
        const msalConfig = {
            auth: {
                clientId: "clientId",
                authority: "https://login.microsoftonline.com/",
                redirectUri: `${window.location.protocol}//${window.location.host}/api/authentication/AzureAuthenticationCallback`,
            },
            cache: {
                cacheLocation: "sessionStorage", // 配置缓存存储位置
                storeAuthStateInCookie: false, // 若在IE11或Edge中遇到问题，请设为"true"
            }
        };

        const loginRequest = {
            scopes: ["openid", "profile", "User.Read.All"]
        };

        const tokenRequest = {
            scopes: ["Mail.Read"]
        };

        myMSALObj = new UserAgentApplication(msalConfig);

        var loginPopupResponse = await getLoginPopup(loginRequest);

        if (loginPopupResponse != null && myMSALObj.getAccount()) {
            var tokenResponse = await getTokenPopup(tokenRequest);

            if (tokenResponse != null) {
                
                // 此axios调用出现404错误
                var setAzureUserResponse = await axios({
                    method: 'get',
                    url: '/api/authentication/SetAzureUser',
                    contentType: "application/json",
                    withCredentials: true,
                    params: {
                        accessToken: tokenResponse.accessToken
                    }
                });

                if (!setAzureUserResponse.succeeded) {
                    window.document.title = "Unauthorized Access";
                    return { name: 'unauthorized-access' }
                } else {
                    utilityStore.$patch({ showProcessingOverlay: false });
                }
            }
        }
    } catch (ex) {
        console.log(ex);
    }
}

[HttpGet("SetAzureUser")]
public JsonResult SetAzureUser(string accessToken)
{
    return Json(_authenticationService.AuthenticateAzureUser(_stateManagement.BuildBaseParameters(), accessToken));
}

内容的提问来源于stack exchange，提问作者Ryan