diff --git a/CHANGELOG.md b/CHANGELOG.md
index fdb5cc6e5..9be1c5f94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Made PropertiesJSON an optional parameter on `Add-PnPVivaConnectionsDashboardACE` as it is not always required when adding an ACE
 - Added a 10 second timeout on the new version check on `Connect-PnPOnline` to prevent the cmdlet from hanging when the connection is slow, GitHub being blocked by a firewall or GitHub being unavailable [#2550](https://github.com/pnp/powershell/pull/2550)
 - Improved `Add-PnPField`, `Get-PnPListItem` and `Get-PnPSiteDesignRun` cmdlets by improving null checks based on warnings from compiler. [#PR1](https://github.com/pnp/powershell/commit/791b031d5fa844f1e6961b1136df9f79f19bfdcd) and [#PR2](https://github.com/pnp/powershell/commit/d56f3cd497be79170f68b29be490b222bf042aaa)
+- Improved `Register-PnPAzureADApp` and `Register-PnPManagementShellAccess` cmdlets to reuse existing HTTP client instead of creating a new one. [#2682](https://github.com/pnp/powershell/pull/2682)
+- Improved `Register-PnPAzureADApp` cmdlet based on compiler warnings. [#2682](https://github.com/pnp/powershell/pull/2682)
 
 ### Removed
 
diff --git a/src/Commands/AzureAD/RegisterAzureADApp.cs b/src/Commands/AzureAD/RegisterAzureADApp.cs
index 602054a8b..a56c997a4 100644
--- a/src/Commands/AzureAD/RegisterAzureADApp.cs
+++ b/src/Commands/AzureAD/RegisterAzureADApp.cs
@@ -195,25 +195,24 @@ protected override void ProcessRecord()
             if (!string.IsNullOrEmpty(token))
             {
                 var cert = GetCertificate(record);
+                var httpClient = Framework.Http.PnPHttpClient.Instance.GetHttpClient();
 
-                using (var httpClient = new HttpClient())
+                if (!AppExists(ApplicationName, httpClient, token))
                 {
-                    if (!AppExists(ApplicationName, httpClient, token))
-                    {
-                        var azureApp = CreateApp(loginEndPoint, httpClient, token, cert, redirectUri, scopes);
-
-                        record.Properties.Add(new PSVariableProperty(new PSVariable("AzureAppId/ClientId", azureApp.AppId)));
-                        record.Properties.Add(new PSVariableProperty(new PSVariable("Certificate Thumbprint", cert.GetCertHashString())));
-                        byte[] certPfxData = cert.Export(X509ContentType.Pfx, CertificatePassword);
-                        var base64String = Convert.ToBase64String(certPfxData);
-                        record.Properties.Add(new PSVariableProperty(new PSVariable("Base64Encoded", base64String)));
-                        StartConsentFlow(loginEndPoint, azureApp, redirectUri, token, httpClient, record, messageWriter, scopes);
-                    }
-                    else
-                    {
-                        throw new PSInvalidOperationException($"The application with name {ApplicationName} already exists.");
-                    }
+                    var azureApp = CreateApp(loginEndPoint, httpClient, token, cert, redirectUri, scopes);
+
+                    record.Properties.Add(new PSVariableProperty(new PSVariable("AzureAppId/ClientId", azureApp.AppId)));
+                    record.Properties.Add(new PSVariableProperty(new PSVariable("Certificate Thumbprint", cert.GetCertHashString())));
+                    byte[] certPfxData = cert.Export(X509ContentType.Pfx, CertificatePassword);
+                    var base64String = Convert.ToBase64String(certPfxData);
+                    record.Properties.Add(new PSVariableProperty(new PSVariable("Base64Encoded", base64String)));
+                    StartConsentFlow(loginEndPoint, azureApp, redirectUri, token, httpClient, record, messageWriter, scopes);
                 }
+                else
+                {
+                    throw new PSInvalidOperationException($"The application with name {ApplicationName} already exists.");
+                }
+
             }
         }
 
@@ -452,7 +451,7 @@ private string GetAuthToken(CmdletMessageWriter messageWriter)
 
         private X509Certificate2 GetCertificate(PSObject record)
         {
-            var cert = new X509Certificate2();
+            X509Certificate2 cert;
             if (ParameterSetName == ParameterSet_EXISTINGCERT)
             {
                 if (!Path.IsPathRooted(CertificatePath))
@@ -519,7 +518,6 @@ private X509Certificate2 GetCertificate(PSObject record)
             var pfxPath = string.Empty;
             var cerPath = string.Empty;
 
-
             if (Directory.Exists(OutPath))
             {
                 pfxPath = Path.Combine(OutPath, $"{ApplicationName}.pfx");
@@ -592,7 +590,7 @@ private AzureADApp CreateApp(string loginEndPoint, HttpClient httpClient, string
                     }
                 },
                 requiredResourceAccess = scopesPayload
-            };            
+            };
 
             var azureApp = RestHelper.PostAsync<AzureADApp>(httpClient, $"https://{AuthenticationManager.GetGraphEndPoint(AzureEnvironment)}/v1.0/applications", token, payload).GetAwaiter().GetResult();
             if (azureApp != null)
diff --git a/src/Commands/AzureAD/RegisterManagementShellAccess.cs b/src/Commands/AzureAD/RegisterManagementShellAccess.cs
index f0411731c..621d3114b 100644
--- a/src/Commands/AzureAD/RegisterManagementShellAccess.cs
+++ b/src/Commands/AzureAD/RegisterManagementShellAccess.cs
@@ -68,7 +68,6 @@ protected override void ProcessRecord()
                         }
                         catch (Microsoft.Identity.Client.MsalException)
                         {
-
                         }
                     }
                 }
@@ -96,32 +95,29 @@ protected override void ProcessRecord()
                             }
                             catch (Microsoft.Identity.Client.MsalException)
                             {
-
                             }
 
                             if (!string.IsNullOrEmpty(accessToken))
                             {
-                                using (var httpClient = new HttpClient())
+                                var httpClient = Framework.Http.PnPHttpClient.Instance.GetHttpClient();
+                                using (var requestMessage = new HttpRequestMessage(HttpMethod.Get, $"https://{GetGraphEndPoint()}/v1.0/organization"))
                                 {
-                                    using (var requestMessage = new HttpRequestMessage(HttpMethod.Get, $"https://{GetGraphEndPoint()}/v1.0/organization"))
+                                    requestMessage.Headers.Add("Authorization", $"Bearer {accessToken}");
+                                    requestMessage.Headers.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
+                                    var response = httpClient.SendAsync(requestMessage).GetAwaiter().GetResult();
+                                    if (response.IsSuccessStatusCode)
                                     {
-                                        requestMessage.Headers.Add("Authorization", $"Bearer {accessToken}");
-                                        requestMessage.Headers.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
-                                        var response = httpClient.SendAsync(requestMessage).GetAwaiter().GetResult();
-                                        if (response.IsSuccessStatusCode)
+                                        var responseContent = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
+                                        var responseJson = JsonSerializer.Deserialize<JsonElement>(responseContent);
+                                        if (responseJson.TryGetProperty("value", out JsonElement valueElement))
                                         {
-                                            var responseContent = response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
-                                            var responseJson = JsonSerializer.Deserialize<JsonElement>(responseContent);
-                                            if (responseJson.TryGetProperty("value", out JsonElement valueElement))
+                                            foreach (var organization in valueElement.EnumerateArray())
                                             {
-                                                foreach (var organization in valueElement.EnumerateArray())
+                                                if (organization.TryGetProperty("id", out JsonElement idElement))
                                                 {
-                                                    if (organization.TryGetProperty("id", out JsonElement idElement))
-                                                    {
-                                                        tenantId = idElement.GetString();
+                                                    tenantId = idElement.GetString();
 
-                                                        break;
-                                                    }
+                                                    break;
                                                 }
                                             }
                                         }