NFA 25.4.4 - 25.4.8 Too Many Redirects 302 Error

Products

• Network Observability
• Network Flow Analysis

Issue/Introduction

After doing a fresh install or upgrade to NFA 25.4.4 - 25.4.8, you may run into an issue where the website doesn't launch and you see, "Too Many Redirects 302 Error's" in your browser.

The Event Logs (Application) will show an error like the below:

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 6/7/2026 5:21:03 PM 
Event time (UTC): 6/7/2026 9:21:03 PM 
Event ID: 5fb86b6ca3214decbde3c89ee2498b8d 
Event sequence: 139 
Event occurrence: 66 
Event detail code: 0 

Application information: 
    Application domain: /LM/W3SVC/1/ROOT/RA-1-00000000000
    Trust level: Full 
    Application Virtual Path: /RA 
    Application Path: D:\NetQoS\Reporter\NetQoS.ReporterAnalyzer.WebSite\ 
    Machine name: <nfaservername>

Process information: 
    Process ID: 5968 
    Process name: w3wp.exe 
    Account name: IIS APPPOOL\ReporterAnalyzerWebSite 

Exception information: 
    Exception type: Win32Exception 
    Exception message: The message received was unexpected or badly formatted

Request information: 
    Request URL: https://<nfaservername>:443/ra/ErrorInfo.aspx 
    Request path: /ra/ErrorInfo.aspx 
    User host address: x.x.x.x
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: IIS APPPOOL\ReporterAnalyzerWebSite 

Thread information: 
    Thread ID: 7 
    Thread account name: IIS APPPOOL\ReporterAnalyzerWebSite 
    Is impersonating: False 
    Stack trace: 

Environment

NFA 25.4.4 - 25.4.8

Windows Server

Cause

Due to a change implemented in the .NET Connector in recent versions, if an NFA Console is installed on a server with a lot of security protocols enabled, this crash may occur. 

Resolution

If the application event logs on your Windows Server, match the exception message, The message received was unexpected or badly formatted, then proceed to install the attached patch. The patch is for NFA 25.4.4. and 25.4.8 only. If you see these symptoms and you are on another version of NFA, please open a support ticket.

If you are on NFA 25.4.4 or 25.4.8, the patch will be attached below. This fix will be included in NFA 25.4.9.

Additional Information

If the error message above is not present, yet you are still seeing 302 error while trying to load NFA. You can try to to the servers IIS (Internet Information Services) web server application and expand out the left hand side pane and go to advanced settings for the ReporterAnalyzerWebSite and set Local User Profile to true and recycle the application pool.