diff --git a/src/Core/Services/Implementations/EmergencyAccessService.cs b/src/Core/Services/Implementations/EmergencyAccessService.cs
index ca88348afe..a647c07717 100644
--- a/src/Core/Services/Implementations/EmergencyAccessService.cs
+++ b/src/Core/Services/Implementations/EmergencyAccessService.cs
@@ -62,10 +62,15 @@ namespace Bit.Core.Services
 
         public async Task<EmergencyAccess> InviteAsync(User invitingUser, string email, EmergencyAccessType type, int waitTime)
         {
-            if (! await _userService.CanAccessPremium(invitingUser))
+            if (!await _userService.CanAccessPremium(invitingUser))
             {
                 throw new BadRequestException("Not a premium user.");
             }
+
+            if (type == EmergencyAccessType.Takeover && invitingUser.UsesKeyConnector)
+            {
+                throw new BadRequestException("You cannot use Emergency Access Takeover because you are using Key Connector.");
+            }
             
             var emergencyAccess = new EmergencyAccess
             {
@@ -171,6 +176,11 @@ namespace Bit.Core.Services
             }
 
             var grantor = await _userRepository.GetByIdAsync(confirmingUserId);
+            if (emergencyAccess.Type == EmergencyAccessType.Takeover && grantor.UsesKeyConnector)
+            {
+                throw new BadRequestException("You cannot use Emergency Access Takeover because you are using Key Connector.");
+            }
+
             var grantee = await _userRepository.GetByIdAsync(emergencyAccess.GranteeId.Value);
 
             emergencyAccess.Status = EmergencyAccessStatusType.Confirmed;
@@ -188,7 +198,16 @@ namespace Bit.Core.Services
             {
                 throw new BadRequestException("Emergency Access not valid.");
             }
-            
+
+            if (emergencyAccess.Type == EmergencyAccessType.Takeover)
+            {
+                var grantor = await _userService.GetUserByIdAsync(emergencyAccess.GrantorId);
+                if (grantor.UsesKeyConnector)
+                {
+                    throw new BadRequestException("You cannot use Emergency Access Takeover because you are using Key Connector.");
+                }
+            }
+
             await _emergencyAccessRepository.ReplaceAsync(emergencyAccess);
         }
 
@@ -202,6 +221,13 @@ namespace Bit.Core.Services
                 throw new BadRequestException("Emergency Access not valid.");
             }
 
+            var grantor = await _userRepository.GetByIdAsync(emergencyAccess.GrantorId);
+
+            if (emergencyAccess.Type == EmergencyAccessType.Takeover && grantor.UsesKeyConnector)
+            {
+                throw new BadRequestException("You cannot takeover an account that is using Key Connector.");
+            }
+
             var now = DateTime.UtcNow;
             emergencyAccess.Status = EmergencyAccessStatusType.RecoveryInitiated;
             emergencyAccess.RevisionDate = now;
@@ -209,8 +235,6 @@ namespace Bit.Core.Services
             emergencyAccess.LastNotificationDate = now;
             await _emergencyAccessRepository.ReplaceAsync(emergencyAccess);
 
-            var grantor = await _userRepository.GetByIdAsync(emergencyAccess.GrantorId);
-
             await _mailService.SendEmergencyAccessRecoveryInitiated(emergencyAccess, NameOrEmail(initiatingUser), grantor.Email);
         }
 
@@ -277,7 +301,12 @@ namespace Bit.Core.Services
             }
 
             var grantor = await _userRepository.GetByIdAsync(emergencyAccess.GrantorId);
-            
+
+            if (emergencyAccess.Type == EmergencyAccessType.Takeover && grantor.UsesKeyConnector)
+            {
+                throw new BadRequestException("You cannot takeover an account that is using Key Connector.");
+            }
+
             return (emergencyAccess, grantor);
         }
 
diff --git a/test/Core.Test/Services/EmergencyAccessServiceTests.cs b/test/Core.Test/Services/EmergencyAccessServiceTests.cs
new file mode 100644
index 0000000000..f3812f20f1
--- /dev/null
+++ b/test/Core.Test/Services/EmergencyAccessServiceTests.cs
@@ -0,0 +1,117 @@
+using Bit.Core.Exceptions;
+using Bit.Core.Models.Table;
+using Bit.Core.Repositories;
+using Bit.Core.Services;
+using Bit.Core.Test.AutoFixture.Attributes;
+using Bit.Core.Test.AutoFixture;
+using NSubstitute;
+using System.Threading.Tasks;
+using System;
+using Xunit;
+
+namespace Bit.Core.Test.Services
+{
+    public class EmergencyAccessServiceTests
+    {
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task InviteAsync_UserWithKeyConnectorCannotUseTakeover(
+            SutProvider<EmergencyAccessService> sutProvider, User invitingUser, string email, int waitTime)
+        {
+            invitingUser.UsesKeyConnector = true;
+            sutProvider.GetDependency<IUserService>().CanAccessPremium(invitingUser).Returns(true);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.InviteAsync(invitingUser, email, Enums.EmergencyAccessType.Takeover, waitTime));
+
+            Assert.Contains("You cannot use Emergency Access Takeover because you are using Key Connector", exception.Message);
+            await sutProvider.GetDependency<IEmergencyAccessRepository>().DidNotReceiveWithAnyArgs().CreateAsync(default);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUserAsync_UserWithKeyConnectorCannotUseTakeover(
+            SutProvider<EmergencyAccessService> sutProvider, User confirmingUser, string key)
+        {
+            confirmingUser.UsesKeyConnector = true;
+            var emergencyAccess = new EmergencyAccess
+            {
+                Status = Enums.EmergencyAccessStatusType.Accepted,
+                GrantorId = confirmingUser.Id,
+                Type = Enums.EmergencyAccessType.Takeover,
+            };
+
+            sutProvider.GetDependency<IUserRepository>().GetByIdAsync(confirmingUser.Id).Returns(confirmingUser);
+            sutProvider.GetDependency<IEmergencyAccessRepository>().GetByIdAsync(Arg.Any<Guid>()).Returns(emergencyAccess);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(new Guid(), key, confirmingUser.Id));
+
+            Assert.Contains("You cannot use Emergency Access Takeover because you are using Key Connector", exception.Message);
+            await sutProvider.GetDependency<IEmergencyAccessRepository>().DidNotReceiveWithAnyArgs().ReplaceAsync(default);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task SaveAsync_UserWithKeyConnectorCannotUseTakeover(
+            SutProvider<EmergencyAccessService> sutProvider, User savingUser)
+        {
+            savingUser.UsesKeyConnector = true;
+            var emergencyAccess = new EmergencyAccess
+            {
+                Type = Enums.EmergencyAccessType.Takeover,
+                GrantorId = savingUser.Id,
+            };
+
+            sutProvider.GetDependency<IUserService>().GetUserByIdAsync(savingUser.Id).Returns(savingUser);
+           
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.SaveAsync(emergencyAccess, savingUser.Id));
+
+            Assert.Contains("You cannot use Emergency Access Takeover because you are using Key Connector", exception.Message);
+            await sutProvider.GetDependency<IEmergencyAccessRepository>().DidNotReceiveWithAnyArgs().ReplaceAsync(default);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task InitiateAsync_UserWithKeyConnectorCannotUseTakeover(
+            SutProvider<EmergencyAccessService> sutProvider, User initiatingUser, User grantor)
+        {
+            grantor.UsesKeyConnector = true;
+            var emergencyAccess = new EmergencyAccess
+            {
+                Status = Enums.EmergencyAccessStatusType.Confirmed,
+                GranteeId = initiatingUser.Id,
+                GrantorId = grantor.Id,
+                Type = Enums.EmergencyAccessType.Takeover,
+            };
+
+            sutProvider.GetDependency<IEmergencyAccessRepository>().GetByIdAsync(Arg.Any<Guid>()).Returns(emergencyAccess);
+            sutProvider.GetDependency<IUserRepository>().GetByIdAsync(grantor.Id).Returns(grantor);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.InitiateAsync(new Guid(), initiatingUser));
+
+            Assert.Contains("You cannot takeover an account that is using Key Connector", exception.Message);
+            await sutProvider.GetDependency<IEmergencyAccessRepository>().DidNotReceiveWithAnyArgs().ReplaceAsync(default);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task TakeoverAsync_UserWithKeyConnectorCannotUseTakeover(
+            SutProvider<EmergencyAccessService> sutProvider, User requestingUser, User grantor)
+        {
+            grantor.UsesKeyConnector = true;
+            var emergencyAccess = new EmergencyAccess
+            {
+                GrantorId = grantor.Id,
+                GranteeId = requestingUser.Id,
+                Status = Enums.EmergencyAccessStatusType.RecoveryApproved,
+                Type = Enums.EmergencyAccessType.Takeover,
+            };
+
+            sutProvider.GetDependency<IEmergencyAccessRepository>().GetByIdAsync(Arg.Any<Guid>()).Returns(emergencyAccess);
+            sutProvider.GetDependency<IUserRepository>().GetByIdAsync(grantor.Id).Returns(grantor);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.TakeoverAsync(new Guid(), requestingUser));
+
+            Assert.Contains("You cannot takeover an account that is using Key Connector", exception.Message);
+        }
+    }
+}