Toad 13.1 Installation fails

The installation of the current version 13.1 of Toad for Oracle 64bit fails on Windows 10 Enterprise with the error message below after trying to accept the license agreement. The file tmpAF15.tmp is created and visible for a short period of time, but then deleted. I executed it with right mouse click: execute as an adminstrator. Any suggestions?

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.DllNotFoundException: Unable to load DLL 'C:\Users\79703\AppData\Local\Temp\tmpAF15.tmp': Zugriff verweigert (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
at Quest.Licensing.Validation.TempWrapper.getCurrentDay()
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object parameters, Object arguments)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture)
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object providedArgs, ParameterModifier modifiers, CultureInfo culture, String namedParams)
at Quest.Licensing.Validation.ClassWrapper.GetCurrentDay()
at Quest.Licensing.QuestKeyFactory.QKFInitialize()
at Quest.Licensing.QuestKeyFactory..ctor()
at Installer.BLL.Business.GetValidLicenses()
at Installer.UIL.ProductLicensing..ctor(Business BusinessObject)
at Installer.BLL.Business.UpdatePanel()
at Installer.BLL.Business.DoNext()
at Installer.UIL.MainForm.btnNext_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3362.0 built by: NET472REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll

BootstrapperCore
Assembly Version: 3.0.0.0
Win32 Version: 3.10.0.2103
CodeBase: file:///C:/Users/79703/AppData/Local/Temp/%7Badedff81-8869-49c2-8a72-49d0019bb3d1%7D/.ba1/BootstrapperCore.DLL

System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.7.2556.0 built by: NET471REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

System
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3362.0 built by: NET472REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll

System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3362.0 built by: NET472REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll

System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.7.2612.0 built by: NET471REL1LAST_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

Installer
Assembly Version: 1.0.6845.2031
Win32 Version: 1.0.6845.2031
CodeBase: file:///C:/Users/79703/AppData/Local/Temp/%7Badedff81-8869-49c2-8a72-49d0019bb3d1%7D/.ba1/Installer.DLL

Quest.SecTech
Assembly Version: 4.5.1.490
Win32 Version: 4.5.1.490
CodeBase: file:///C:/Users/79703/AppData/Local/Temp/%7Badedff81-8869-49c2-8a72-49d0019bb3d1%7D/.ba1/Quest.SecTech.DLL

System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3324.0 built by: NET472REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.7.2556.0 built by: NET471REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

Microsoft.Deployment.WindowsInstaller
Assembly Version: 3.0.0.0
Win32 Version: 3.10.0.2103
CodeBase: file:///C:/Users/79703/AppData/Local/Temp/%7Badedff81-8869-49c2-8a72-49d0019bb3d1%7D/.ba1/Microsoft.Deployment.WindowsInstaller.DLL

Microsoft.GeneratedCode
Assembly Version: 1.0.0.0
Win32 Version: 4.7.2612.0 built by: NET471REL1LAST_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

Microsoft.mshtml
Assembly Version: 7.0.3300.0
Win32 Version: 7.0.3300.0
CodeBase: file:///C:/WINDOWS/assembly/GAC/Microsoft.mshtml/7.0.3300.0__b03f5f7f11d50a3a/Microsoft.mshtml.dll

Accessibility
Assembly Version: 4.0.0.0
Win32 Version: 4.7.2556.0 built by: NET471REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

It looks like you might have some virus protection or local policy preventing us from writing to the tmp dir. We need to write a dll there in order to perform some actions and it is being prevented from finding it. I would check with your IT to remove these restrictions.

System.DllNotFoundException: Unable to load DLL 'C:\Users\79703\AppData\Local\Temp\tmpAF15.tmp': Zugriff verweigert (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))