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IIS Support Blog
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1,063

Port 80 Occupied???

Archi_Chakraborty on May 26 2024 06:29 AM
2,167

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...
2,129

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...
5,618

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....
4,835

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...
3,747

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 ...
7,896

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...
2,188

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 ...
3,409

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...
4,755

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...
16.4K

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?
6,758

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...
5,216

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 ...
5,340

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 ...
4,851

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 ...
5,990

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 ...
7,570

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 ...
9,857

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

Georgiana27
in Troubleshooting IIS apps: one structured approach on Jul 04 2024 01:51 AM
Also, to start investigating, this docs is a good start Data collection strategies of common IIS Web Server-related issues - Internet Information Services | Microsoft Learn
0 Likes
Georgiana27
in Antivirus Exclusion List for ASP.NET applications hosted on IIS on Jul 02 2024 02:58 AM
Hi Jonathan, The files and folders are still up to date. The idea is that scanning security tools (such as McAfee, Trellix, CrowdStrike, you name it) should not scan the application (site) content, IIS processes and folders, because they may trigger file change notifications, which may cause w3wp to...
0 Likes
Prachiksh
in ARR Configuration for backend sites with SNI binding on IIS on Jun 18 2024 06:56 PM
@Jason Ferguson Were you able to find a solution for your problem? I have a similar scenario
0 Likes
manojdixit
in A quick guide to publish Python SDK Azure Bots in App Service on Jun 11 2024 12:38 PM
Thanks Shekhar. We may need to add the gunicorn package to requirements.txt if you see below error: 2024-06-11T00:29:26.983771768Z File "<frozen importlib._bootstrap>", line 1007, in _find_and_load2024-06-11T00:29:26.983776468Z File "<frozen importlib._bootstrap>", line 972, in _find_and_load_unlock...
0 Likes
SouravChakraborty
in Getting better stack traces in Process Monitor / Process Explorer on Jun 10 2024 01:15 AM
Hello Microsoft Team, This article is very helpful in indeed. Although the image files links are broken hence can you please fix this then it would really help us. Thanks in advance.
0 Likes