Hi Sharon,
Here is the info you have requested:
Version of Outlook - Version 
Version of Windows 
-
If possible, send the logs from Outlook (click on the HubSpot Sales icon >configure > click on “send report logs”). You can also access logs by navigating directly to C:\Users\%username%\AppData\Roaming\Sidekick\Logs
Name: HubSpot Sales for Outlook - HubSpot Sales for Outlook
From: https://dl.getsidekick.com/outlook/vsto/Sidekick.vsto
************** Exception Text **************
System.Runtime.InteropServices.COMException (0x800736B2): The application binding data format is invalid. (Exception from HRESULT: 0x800736B2)
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.DownloadAddIn(TimeSpan timeout)
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()
+-----------------------------------------------------+
| HubSpot for Outlook Installer |
| Build: Fri 10/18/2019 14:53:59.83 |
+-----------------------------------------------------+
Thursday, 23 January 2020 - 6:12:23 PM
INFO: Installed IE version: 11.973.17763.0
+-----------------------------------------------------+
| HubSpot for Outlook Installer |
| Build: Fri 10/18/2019 14:53:59.83 |
+-----------------------------------------------------+
Thursday, 23 January 2020 - 6:12:24 PM
INFO: Installed IE version: 11.973.17763.0
INFO: Initializing addin registry
INFO: Cleaning Office Wef Cache
INFO: CleanOnlineAppCache
ERROR: Failed to clear AppCache: System.Runtime.InteropServices.COMException (0x800736B2): The application binding data format is invalid. (Exception from HRESULT: 0x800736B2)
at System.Deployment.Internal.Isolation.IEnumSTORE_ASSEMBLY.Next(UInt32 celt, STORE_ASSEMBLY[] rgelt)
at System.Deployment.Internal.Isolation.StoreAssemblyEnumeration.MoveNext()
at System.Deployment.Application.ComponentStore.ScavengeContext.CollectOnlineApps(IDefinitionAppId[]& deployAppIdPtrs)
at System.Deployment.Application.ComponentStore.ScavengeContext.CleanOnlineAppCache()
at System.Deployment.Application.ComponentStore.CleanOnlineAppCache()
at System.Deployment.Application.SubscriptionStore.CleanOnlineAppCache()
at System.Deployment.Application.DeploymentServiceCom.CleanOnlineAppCacheInternal()
at System.Deployment.Application.DeploymentServiceCom.CleanOnlineAppCache()
at VstoInstaller.RepairUtils.SystemUtils.ClearAppCache()
INFO: Downloading VSTO Runtime
INFO: Looking for Vsto installation key: SOFTWARE\Microsoft\VSTO Runtime Setup\v4
INFO: Installing VSTO Runtime, mode: repair
INFO: User canceled installation of: VSTO Runtime
INFO: Removing installer for VSTO Runtime
INFO: Uninstalling existing Add-Ins
INFO: Sidekick for Outlook is not installed
INFO: HubSpot Sales for Outlook is not installed
INFO: Downloading HubSpot for Outlook
INFO: Installing HubSpot for Outlook, mode: default
INFO: Removing installer for HubSpot for Outlook
ERROR: VSTOInstall failed: -400 - [VSTOinstaller.exe] The solution could not be installed.
ERROR: Add-in repair/install failed: VstoInstaller.Models.VstoInstallerException: Unable to install HubSpot for Outlook
at VstoInstaller.RepairUtils.RuntimeRepair.<ReinstallHubSpotAddin>d__15.MoveNext()