Resharper Ultimate failed to install

My Resharper installation keeps failing. The install logs are full of the following exceptions for various files:

10:33:08.567 |E| RealizedAssemblyItemUnification| Error unrealizing assembly item “NuGet.LibraryModel, Version=5.2.0.19081, Culture=neutral, PublicKeyToken=5aaa11a165479571” file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll. The file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll is in use by an unidentified process. Access is denied.

--- EXCEPTION #1/3 [UnauthorizedAccessException]
Message = “Access is denied.”
ExceptionPath = Root.InnerException.InnerException
ClassName = System.UnauthorizedAccessException
Data.RetryCount = 2
HResult = E_ACCESSDENIED=COR_E_UNAUTHORIZEDACCESS=Win32AccessDenied=WIN32_ERROR_ACCESS_DENIED=80070005
Source = JetBrains.Platform.Core
StackTraceString = “
at JetBrains.Util.Win32FileSystemWriteHandler.DeleteFile(FileSystemPath it, Boolean& isDirectory, Int32 nAttempts)
at JetBrains.Util.Win32FileSystemInteraction.DeleteFile(FileSystemPath thіs, Boolean& isDirectory, Int32 nAttempts)
at JetBrains.Util.FileSystemPathEx.Delete(FileSystemPath path, Int32 nAttempts)
at JetBrains.Util.FileSystemPathEx.Delete(FileSystemPath path)
at JetBrains.Application.Bindings.AssemblyUnification.RealizedAssemblyItemUnification.UnrealizeAssemblyItem(RealizedAssemblyItemData data, FilesInUse filesinuse)
”

--- Outer ---

--- EXCEPTION #2/3 [CannotDeleteTempEntityException]
Message = “Error unrealizing assembly item “NuGet.LibraryModel, Version=5.2.0.19081, Culture=neutral, PublicKeyToken=5aaa11a165479571” file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll. The file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll is in use by an unidentified process.”
ExceptionPath = Root.InnerException
ClassName = JetBrains.Util.CannotDeleteTempEntityException
InnerException = “Exception #1 at Root.InnerException.InnerException”
HResult = COR_E_APPLICATION=80131600

--- Outer ---

--- EXCEPTION #3/3 [LoggerException]
Message = “Error unrealizing assembly item “NuGet.LibraryModel, Version=5.2.0.19081, Culture=neutral, PublicKeyToken=5aaa11a165479571” file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll. The file C:\Users\{windows_username}\AppData\Local\JetBrains\~\AppDomainBase\Zyfeqeh\BuildEngine\NuGet.LibraryModel.dll is in use by an unidentified process.”
ExceptionPath = Root
ClassName = JetBrains.Util.LoggerException
InnerException = “Exception #2 at Root.InnerException”
HResult = COR_E_APPLICATION=80131600
StackTraceString = “
at JetBrains.Application.Bindings.AssemblyUnification.RealizedAssemblyItemUnification.UnrealizeAssemblyItem(RealizedAssemblyItemData data, FilesInUse filesinuse)
at JetBrains.Application.Bindings.AssemblyUnification.RealizedAssemblyItemUnification.<>c__DisplayClass20_1.<RealizeCore>b__0()
at JetBrains.Lifetimes.LifetimeDefinition.Destruct()
at JetBrains.Lifetimes.LifetimeDefinition.Terminate()
at JetBrains.Lifetimes.LifetimeDefinition.Destruct()
at JetBrains.Lifetimes.LifetimeDefinition.Terminate()
at JetBrains.Util.Threading.SynchronizedLifetime.<>c__DisplayClass3_0.<.ctor>b__0()
at JetBrains.Lifetimes.LifetimeDefinition.Destruct()
at JetBrains.Lifetimes.LifetimeDefinition.Terminate()
at JetBrains.Lifetimes.LifetimeDefinition.Dispose()
at JetBrains.Lifetimes.Lifetime.Using[T](Func`2 action)
at JetBrains.Platform.Installer.Services.InstallerInstallService.RunLocalInstallScript(InstallableHostInFolder hostToRegister, ICollection`1 packages, IIsolatedBuildRunners runners, IProgressIndicator pi)
at JetBrains.Platform.Installer.Services.InstallerInstallService.<>c__DisplayClass15_0.<InstallHost>b__0(Lifetime lifetime)
at JetBrains.Lifetimes.Lifetime.Using(Action`1 action)
at JetBrains.Platform.Installer.Services.InstallerInstallService.InstallHost(InstallableHostInFolder hostToUpdate, InstallerContext context, IIsolatedBuildRunners runners, Boolean ignoreExtensions, IProgressIndicator pi)
at JetBrains.Platform.Installer.Services.InstallerInstallService.<>c__DisplayClass10_2.<InstallProducts>b__2()
at JetBrains.Util.ILoggerEx.Catch(ILogger thіs, Action F, ExceptionOrigin origin, LoggingLevel loggingLevel)
at JetBrains.Platform.Installer.Services.InstallerInstallService.<>c__DisplayClass10_0.<InstallProducts>b__0(Lifetime lifetime)
at JetBrains.Lifetimes.Lifetime.Using(Action`1 action)
at JetBrains.Platform.Installer.Services.InstallerInstallService.InstallProducts(ICollection`1 hostsToUpdate, InstallerContext context, Boolean ignoreExtensions, IProgressOwner owner, IProgressIndicator pi)
at JetBrains.Platform.Installer.Services.InstallerInstallService.<>c__DisplayClass7_0.<Install>b__0()
at JetBrains.Util.ILoggerEx.Catch(ILogger thіs, Action F, ExceptionOrigin origin, LoggingLevel loggingLevel)
at JetBrains.Platform.Installer.Services.InstallerInstallService.Install(InstallTargets targets, InstallerContext context, InstalledProductsDiscovery productsDiscovery, IProgressOwner owner, Boolean ignoreExtensions)
at JetBrains.Platform.Installer.Models.InstallerViewModel.<GoInstall>b__168_0(InstallTargets targets, IProgressOwner progress)
at JetBrains.Platform.Installer.Models.ReadyToInstallPage.<GoInstall>b__34_0(Lifetime lifetime, IProgressOwner owner)
at JetBrains.Platform.Installer.Models.InstallerPageWithProgress.<>c__DisplayClass17_0.<RunAction>b__3()
at JetBrains.Util.Logging.Logger.Catch(Action action)
at JetBrains.Platform.Installer.Models.InstallerPageWithProgress.<>c__DisplayClass17_0.<RunAction>b__2()
at JetBrains.Util.Logging.Logger.Catch(Action action)
at JetBrains.Platform.Installer.Models.InstallerPageWithProgress.<>c__DisplayClass17_0.<RunAction>b__1()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
”

I have already tried completely uninstalling resharper following this guide. Next I fully deleted the "C:\Users\{windows_username}\AppData\Local\JetBrains" folder, rebooted my PC and retried the installation using both the full installer and the web installer. After reboot I am not running any other program besides the installer, so any "unidentified process" which is locking up certain files in the "C:\Users\{windows_username}\AppData\Local\JetBrains\~" directory (which I had completely removed before reboot) can only be the installer itself. I am running the installer with Administrator permissions.

I have uploaded the complete install log using the web form with the following file name.

InstallLog_2019-09-05T10-31-30.txt