SSRS Windows Server 2016 "Unknown Exception raised by task"

We recently ran Windows updates on a Windows Server 2016, which we have SSRS installed on. Before the updates, there were no known issues. After the updates, running the same reports cause issues. The reports being ran are very simple and do not return much data at all. The following error is always seen in the ReportServerService Log File:

library!ReportServer_0-2!2d18!05/29/2020-09:33:43:: i INFO: Call to GetItemTypeAction(/Reports/********/*****). User: *********. Unknown Exception raised by task.

The Web Portal log does not have any errors. The web page loading the report just spins and spins and spins. I have even gone as far as removing the dataset to the report and it still does not load.

Another wrinkle is that some users can access the same report. Some users have intermittent issues, where a refresh will allow them to render the report.

Any help is appreciated.

Below Added 6/12/2020 - Here is the Event Viewer Log that correlates to a failed "spinning" report. It seems the request never connects to the server:

Event code: 3005 Event message: An unhandled exception has occurred. Event time: 6/12/2020 1:44:21 PM Event time (UTC): 6/12/2020 6:44:21 PM Event ID: f05f4e5dcd5d423db7c36e5615b1031a Event sequence: 4 Event occurrence: 1 Event detail code: 0

Application information: Application domain: ReportServer_MSSQLSERVER_0-2-132364610358203590 Trust level: RosettaSrv Application Virtual Path: /ReportServer Application Path: C:\Program Files\Microsoft SQL Server\MSRS13.MSSQLSERVER\Reporting Services\ReportServer\ Machine name: MACHINENAME

Process information: Process ID: 14284 Process name: ReportingServicesService.exe Account name: NT AUTHORITY\SYSTEM

Exception information: Exception type: COMException Exception message: This network connection does not exist. (Exception from HRESULT: 0x800708CA) at Microsoft.ReportingServices.HostingInterfaces.IRsHttpPipeline.GetAuthType() at ReportingServicesHttpRuntime.RsWorkerRequest.GetUserToken()

Request information: Request URL: URL Removed but trust me there was one Request path: /ReportServer/Pages/ReportViewer.aspx User host address: XXX.XXX.XXX.XXX User:
Is authenticated: False Authentication Type:
Thread account name: NT AUTHORITY\SYSTEM

Thread information: Thread ID: 86 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.ReportingServices.HostingInterfaces.IRsHttpPipeline.GetAuthType() at ReportingServicesHttpRuntime.RsWorkerRequest.GetUserToken()

Custom event details: