diff --git a/Xcodes.xcodeproj/project.pbxproj b/Xcodes.xcodeproj/project.pbxproj
index b855b63..d1a6c21 100644
--- a/Xcodes.xcodeproj/project.pbxproj
+++ b/Xcodes.xcodeproj/project.pbxproj
@@ -164,9 +164,9 @@
 			children = (
 				CA735108257BF96D00EA9CF8 /* AttributedText.swift */,
 				CA73510C257BFCEF00EA9CF8 /* NSAttributedString+.swift */,
+				CA5D781D257365D6008EDE9D /* PinCodeTextView.swift */,
 				CAA1CB34255A5AD5003FD669 /* SignInCredentialsView.swift */,
 				CAA1CB44255A5B60003FD669 /* SignIn2FAView.swift */,
-				CA5D781D257365D6008EDE9D /* PinCodeTextView.swift */,
 				CAA1CB48255A5C97003FD669 /* SignInSMSView.swift */,
 				CAA1CB4C255A5CFD003FD669 /* SignInPhoneListView.swift */,
 			);
diff --git a/Xcodes/Backend/AppState.swift b/Xcodes/Backend/AppState.swift
index 4ee7fb3..38fd512 100644
--- a/Xcodes/Backend/AppState.swift
+++ b/Xcodes/Backend/AppState.swift
@@ -15,6 +15,7 @@ class AppState: ObservableObject {
     @Published var allVersions: [XcodeVersion] = []
     @Published var error: AlertContent?
     @Published var presentingSignInAlert = false
+    @Published var isProcessingRequest = false
     @Published var secondFactorData: SecondFactorData?
     
     // MARK: - Authentication
@@ -62,11 +63,13 @@ class AppState: ObservableObject {
         try? Current.keychain.set(password, key: username)
         Current.defaults.set(username, forKey: "username")
         
+        isProcessingRequest = true
         return client.login(accountName: username, password: password)
             .receive(on: DispatchQueue.main)
             .handleEvents(
                 receiveOutput: { authenticationState in 
                     self.authenticationState = authenticationState
+                    self.isProcessingRequest = false
                 },
                 receiveCompletion: { completion in
                     self.handleAuthenticationFlowCompletion(completion)
@@ -85,10 +88,12 @@ class AppState: ObservableObject {
     }
 
     func requestSMS(to trustedPhoneNumber: AuthOptionsResponse.TrustedPhoneNumber, authOptions: AuthOptionsResponse, sessionData: AppleSessionData) {        
+        isProcessingRequest = true
         client.requestSMSSecurityCode(to: trustedPhoneNumber, authOptions: authOptions, sessionData: sessionData)
             .sink(
                 receiveCompletion: { completion in
                     self.handleAuthenticationFlowCompletion(completion)
+                    self.isProcessingRequest = false
                 }, 
                 receiveValue: { authenticationState in 
                     self.authenticationState = authenticationState
@@ -105,11 +110,13 @@ class AppState: ObservableObject {
     }
     
     func submitSecurityCode(_ code: SecurityCode, sessionData: AppleSessionData) {
+        isProcessingRequest = true
         client.submitSecurityCode(code, sessionData: sessionData)
             .receive(on: DispatchQueue.main)
             .sink(
                 receiveCompletion: { completion in
                     self.handleAuthenticationFlowCompletion(completion)
+                    self.isProcessingRequest = false
                 },
                 receiveValue: { authenticationState in
                     self.authenticationState = authenticationState
diff --git a/Xcodes/Frontend/SignIn/SignIn2FAView.swift b/Xcodes/Frontend/SignIn/SignIn2FAView.swift
index 329a108..d49f088 100644
--- a/Xcodes/Frontend/SignIn/SignIn2FAView.swift
+++ b/Xcodes/Frontend/SignIn/SignIn2FAView.swift
@@ -26,7 +26,7 @@ struct SignIn2FAView: View {
                 Spacer()
                 Button("Continue", action: { appState.submitSecurityCode(.device(code: code), sessionData: sessionData) })
                     .keyboardShortcut(.defaultAction)
-                    .disabled(code.count != authOptions.securityCode.length)
+                    .disabled(code.count != authOptions.securityCode.length || appState.isProcessingRequest)
             }
         }
         .padding()
diff --git a/Xcodes/Frontend/SignIn/SignInCredentialsView.swift b/Xcodes/Frontend/SignIn/SignInCredentialsView.swift
index 7b7c49c..f4f16db 100644
--- a/Xcodes/Frontend/SignIn/SignInCredentialsView.swift
+++ b/Xcodes/Frontend/SignIn/SignInCredentialsView.swift
@@ -29,7 +29,7 @@ struct SignInCredentialsView: View {
                 Button("Cancel") { isPresented = false }
                     .keyboardShortcut(.cancelAction)
                 Button("Next") { appState.signIn(username: username, password: password) }
-                    .disabled(username.isEmpty)
+                    .disabled(username.isEmpty || appState.isProcessingRequest)
                     .keyboardShortcut(.defaultAction)
             }
         }
diff --git a/Xcodes/Frontend/SignIn/SignInPhoneListView.swift b/Xcodes/Frontend/SignIn/SignInPhoneListView.swift
index 562882d..2fe8faf 100644
--- a/Xcodes/Frontend/SignIn/SignInPhoneListView.swift
+++ b/Xcodes/Frontend/SignIn/SignInPhoneListView.swift
@@ -30,7 +30,7 @@ struct SignInPhoneListView: View {
                 Spacer()
                 Button("Continue", action: { appState.requestSMS(to: authOptions.trustedPhoneNumbers!.first { $0.id == selectedPhoneNumberID }!, authOptions: authOptions, sessionData: sessionData) })
                     .keyboardShortcut(.defaultAction)
-                    .disabled(selectedPhoneNumberID == nil)
+                    .disabled(selectedPhoneNumberID == nil || appState.isProcessingRequest)
             }
         }
         .padding()
diff --git a/Xcodes/Frontend/SignIn/SignInSMSView.swift b/Xcodes/Frontend/SignIn/SignInSMSView.swift
index 11804b5..1fe1e9b 100644
--- a/Xcodes/Frontend/SignIn/SignInSMSView.swift
+++ b/Xcodes/Frontend/SignIn/SignInSMSView.swift
@@ -26,7 +26,7 @@ struct SignInSMSView: View {
                 Spacer()
                 Button("Continue", action: { appState.submitSecurityCode(.sms(code: code, phoneNumberId: trustedPhoneNumber.id), sessionData: sessionData) })
                     .keyboardShortcut(.defaultAction)
-                    .disabled(code.count != authOptions.securityCode.length)
+                    .disabled(code.count != authOptions.securityCode.length || appState.isProcessingRequest)
             }
         }
         .padding()