diff --git a/src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Services.cs b/src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Services.cs
index e535b399e4..861a05b459 100644
--- a/src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Services.cs
+++ b/src/Umbraco.Infrastructure/DependencyInjection/UmbracoBuilder.Services.cs
@@ -103,7 +103,7 @@ namespace Umbraco.Cms.Infrastructure.DependencyInjection
         {
             var hostingEnvironment = container.GetRequiredService<IHostingEnvironment>();
             var globalSettings = container.GetRequiredService<IOptions<GlobalSettings>>().Value;
-            var mainLangFolder = new DirectoryInfo(hostingEnvironment.MapPathContentRoot(WebPath.Combine(globalSettings.UmbracoPath, "config", "lang")));
+            var mainLangFolder = new DirectoryInfo(hostingEnvironment.MapPathContentRoot(WebPath.Combine(Constants.SystemDirectories.Umbraco, "config", "lang")));
             var appPlugins = new DirectoryInfo(hostingEnvironment.MapPathContentRoot(Constants.SystemDirectories.AppPlugins));
             var configLangFolder = new DirectoryInfo(hostingEnvironment.MapPathContentRoot(WebPath.Combine(Constants.SystemDirectories.Config, "lang")));
 
diff --git a/src/Umbraco.Web.BackOffice/Controllers/BackOfficeController.cs b/src/Umbraco.Web.BackOffice/Controllers/BackOfficeController.cs
index a52e018f58..06ba156efc 100644
--- a/src/Umbraco.Web.BackOffice/Controllers/BackOfficeController.cs
+++ b/src/Umbraco.Web.BackOffice/Controllers/BackOfficeController.cs
@@ -118,7 +118,7 @@ namespace Umbraco.Cms.Web.BackOffice.Controllers
             // force authentication to occur since this is not an authorized endpoint
             var result = await this.AuthenticateBackOfficeAsync();
 
-            var viewPath = Path.Combine(_globalSettings.UmbracoPath , Constants.Web.Mvc.BackOfficeArea, nameof(Default) + ".cshtml")
+            var viewPath = Path.Combine(Constants.SystemDirectories.Umbraco, Constants.Web.Mvc.BackOfficeArea, nameof(Default) + ".cshtml")
                 .Replace("\\", "/"); // convert to forward slashes since it's a virtual path
 
             return await RenderDefaultOrProcessExternalLoginAsync(
@@ -204,7 +204,7 @@ namespace Umbraco.Cms.Web.BackOffice.Controllers
             // force authentication to occur since this is not an authorized endpoint
             var result = await this.AuthenticateBackOfficeAsync();
 
-            var viewPath = Path.Combine(_globalSettings.UmbracoPath, Constants.Web.Mvc.BackOfficeArea, nameof(AuthorizeUpgrade) + ".cshtml");
+            var viewPath = Path.Combine(Constants.SystemDirectories.Umbraco, Constants.Web.Mvc.BackOfficeArea, nameof(AuthorizeUpgrade) + ".cshtml");
 
             return await RenderDefaultOrProcessExternalLoginAsync(
                 result,
diff --git a/src/Umbraco.Web.UI/umbraco/UmbracoBackOffice/Default.cshtml b/src/Umbraco.Web.UI/umbraco/UmbracoBackOffice/Default.cshtml
index 12a3c420fb..50394bc2a1 100644
--- a/src/Umbraco.Web.UI/umbraco/UmbracoBackOffice/Default.cshtml
+++ b/src/Umbraco.Web.UI/umbraco/UmbracoBackOffice/Default.cshtml
@@ -1,9 +1,11 @@
 @using Microsoft.Extensions.Options;
 @using System.Globalization
+@using Umbraco.Cms.Core
 @using Umbraco.Cms.Core.Configuration
 @using Umbraco.Cms.Core.Configuration.Models
 @using Umbraco.Cms.Core.Hosting
 @using Umbraco.Cms.Core.Logging
+@using Umbraco.Cms.Core.Routing
 @using Umbraco.Cms.Core.Services
 @using Umbraco.Cms.Core.WebAssets
 @using Umbraco.Cms.Infrastructure.WebAssets
@@ -119,7 +121,7 @@
         }
     </script>
 
-    <script src="lib/lazyload-js/LazyLoad.min.js"></script>
+    <script src="@WebPath.Combine(backOfficePath.TrimStart("~"), "/lib/lazyload-js/LazyLoad.min.js")"></script>
     <script src="@Url.GetUrlWithCacheBust("Application", "BackOffice", null, hostingEnvironment, umbracoVersion, runtimeMinifier)"></script>
 
     @if (isDebug)