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IIS Support Blog
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739

Port 80 Occupied???

Archi_Chakraborty on May 26 2024 06:29 AM
1,315

Windows Server 2022 IIS web site TLS 1.3 does not work with client certificate authentication

Jason Xu on May 02 2024 11:30 AM
On Windows Server 2022, in IIS Web Site SSL binding, there is TLS 1.3 option enabled by default. However, if the web app...
1,889

customsd controls event log ChannelAccess and causing IIS ARR module unable to register

Jason Xu on Apr 17 2024 04:54 PM
Introduction of issue symptom: 1. With ARR module in IIS global module list, w3wp.exe got 503 at first request - the w3w...
4,573

APS.NET Temp file accumulation on server

PradeepSharma on Nov 28 2023 10:12 AM
Issue: Many of our customers have observed ASP.NET files piled up on many of the servers and size has gone up to 100 GB....
4,137

HTTP Request Smuggling in Microsoft IIS Server

PradeepSharma on Nov 28 2023 10:11 AM
Symptoms - Security scans show Request Smuggling vulnerability on IIS server. The vulnerability allows a remote attacker...
3,287

Content Security Vulnerability in ASP.NET(WebForms)

PradeepSharma on Nov 27 2023 07:48 PM
Issue : While implementing CSP(content security policy) in ASP.NET WEB Forms, few of the scripts are not working on the ...
6,534

IIS Short name Enumeration

PradeepSharma on Nov 27 2023 07:47 PM
Symptoms : The security scan tools show that Microsoft Internet Information Server (IIS) suffers from a vulnerability wh...
1,977

IIS manager GUI not working (Method not found)

PradeepSharma on Nov 27 2023 07:45 PM
Issue: IIS manager GUI not working. When user is opening up IIS manager and trying to browse the application pools then ...
3,183

Static Constructor Exceptions: A Rare Culprit That Requires App Restarts

manojdixit on Oct 18 2023 06:20 AM
If a static constructor throws an exception, the runtime doesn't invoke it a second time, and the type will remain unini...
4,388

Hosting ASP.Net Core application in AKS in Linux Container with Troubleshooting and Data Collection

jhaujala43 on Sep 29 2023 01:45 PM
Azure Kubernetes Services (AKS) is Azure's managed Kubernetes orchestrations services that simplify container deployment...
15.1K

ASP.NET Core: 503 Server has been shutdown

MattHamrick on May 26 2023 10:52 AM
What does 503 Server has been shutdown mean and what is the most likely cause and solution?
6,407

Azure B2C Signout (AADB2C90272: the id_token_hint parameter has not been specified in the request)

Sandeep_Goyal on Apr 19 2023 11:32 PM
Azure B2C Signout was not working for an application (AADB2C90272: the id_token_hint parameter has not been specified in...
4,999

Auditing Scenarios for Web Application Hosted in IIS - Part 4 - Files being written to folder

manojdixit on Feb 08 2023 11:04 AM
I have come across a few instances Root Cause Analysis (RCA) was requested for issues related to a web application that ...
5,114

Auditing Scenarios for Web Application Hosted in IIS - Part 3 - Website deleted

manojdixit on Feb 08 2023 11:04 AM
I have come across a few instances Root Cause Analysis (RCA) was requested for issues related to a web application that ...
4,653

Auditing Scenarios for Web Application Hosted in IIS - Part 2 - Permissions changed on Folder

manojdixit on Feb 08 2023 11:04 AM
I have come across a few instances Root Cause Analysis (RCA) was requested for issues related to a web application that ...
5,679

Auditing Scenarios for Web Application Hosted in IIS - Part 1 - SSL Binding Modified

manojdixit on Feb 08 2023 11:03 AM
I have come across a few instances Root Cause Analysis (RCA) was requested for issues related to a web application that ...
7,176

The Strange Case of inetmgr.exe.config

Khanita on Jan 10 2023 10:09 AM
If you've got assembly loading errors in your Inetmgr UI, this may be what you were looking for. Read along to find out ...
9,333

Azure App Service & ASP.NET Core 3.1 500.30 - One odd cause

MattHamrick on Jan 06 2023 03:54 PM
Just a scenario of one kind of problem that cropped up with a customer targeting .NET Core 3.1 on Azure App Services and...

Latest Comments

liju_pv
in Host Header Vulnerability on May 29 2024 10:26 AM
Hi Nedim,How to Disable support for X-Forwarded-Host as you have suggested above? Thanks!
0 Likes
jonathanbutchertrace
in Antivirus Exclusion List for ASP.NET applications hosted on IIS on May 28 2024 06:46 AM
Hi, Is this advise still current, and if so• Can the antivirus exclusions to certain folders be more specific?o Which files in particular require the antivirus exception AND still guarantee optimized application?• If the exceptions cannot be specific, and MUST be at that level (wwwroot etc), how are...
0 Likes
Ali_Emre_Ilhan
in ASP.NET Core: 503 Server has been shutdown on May 25 2024 04:31 AM
Dear Mett,I almost never comment anywhere, but I think if you hadn't written that invaluable support post I wouldn't have found the solution to the problem, so the post deserves a big thank you.The best.
1 Likes
MattHamrick
in Windows Authentication HTTP Request Flow in IIS on May 16 2024 07:15 AM
@gesown Regarding invalid SSL certs impacting authentication -- SSL cert exchange happens before HTTP, and they generally do not affect each other. If something happens during SSL cert exchange and HTTP doesn't happen, then Windows Auth won't happen either. If you're referring to mutual TLS, where t...
0 Likes
GmarEater
in ASP.NET Core: 503 Server has been shutdown on May 15 2024 09:36 PM
You save me, I had to deliver in few hours and stuck with this error ( I had two builder) thanx a lot
1 Likes