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IIS Support Blog
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815

How to Troubleshoot WAS Fails to Start - Error 1326: The user name or password is incorrect

Lou_Prete on Aug 10 2022 07:27 AM
How to Troubleshoot WAS Fails to Start - Error 1326: The user name or password is incorrect. Attempts to start the Windo...
1,822

Capturing dotnet trace for app service

Meghali on May 19 2022 06:54 AM
Recently I was involved in troubleshooting a bot case where a system.net call from the bot was failing. We wanted to gra...
1,098

Direct Line App Service extension disconnect issues

Ramchandra_Kudtarkar on Apr 26 2022 02:20 PM
Direct Line App Service extension is getting disconnected without any reason, or after the process restart or configurat...
1,486

How to remove a HTTP module using PowerShell in IIS

trevorchamblee on Mar 09 2022 03:08 PM
This article will assist you to remove a module from IIS that is causing IIS to fail starting W3WP.EXE when the module i...
2,494

ASP.NET Thread Usage on IIS 7.5, IIS 7.0, and IIS 6.0

Archi_Chakraborty on Feb 23 2022 07:30 PM
ASP.NET Thread Usage on IIS 7.5, IIS 7.0, and IIS 6.0
1,829

Users get intermittent credential prompt on client browser when using IIS Windows Authentication

Jason Xu on Jan 27 2022 09:56 AM
Users get intermittent credential prompt on client browser when using IIS Windows Authentication, after Domain Controlle...
3,860

Object identifier does not represent a valid object

Nedim on Dec 14 2021 04:51 PM
IIS Manager may display this error while starting a website: “The object identifier does not represent a valid object”
16.1K

DefaultAzureCredential failed to retrieve a token

Nedim on Dec 14 2021 04:50 PM
If you try to retrieve a value from Azure Key Vault, you may run into this error: “DefaultAzureCredential failed to retr...
7,764

Connection closed by remote host

Nedim on Dec 14 2021 04:48 PM
You may run into this error message when you try to connect an FTP site in Command Prompt: “Connection closed by remote ...
1,616

Status Code 400.0.64

Nedim on Dec 14 2021 04:46 PM
Code 64 refers to “The specified network name is no longer available”
1,635

Invalid Content-Length

Nedim on Dec 14 2021 04:43 PM
“Invalid Content-Length” and “Server sends too much data” errors
2,470

Cannot use prefix with empty namespace URI

Nedim on Jul 29 2021 02:24 PM
This error message may show up if you try to change an IIS setting: There was an error while performing this operation. ...
3,176

Kernel-mode and user-mode caching

Nedim on Jul 29 2021 02:13 PM
After enabling output caching (refers to both kernel-mode and user-mode) in IIS, you may want to make sure resources are...
6,294

Memory dumps to study a high-CPU performance issue

Pingulea on Jul 23 2021 08:57 AM
Series of dumps from a process instance to study why it consumes CPU
4,022

Memory dumps to study a memory-leak performance issue

Pingulea on Jul 23 2021 08:53 AM
Series of dumps from a process instance to study why memory leaks
3,183

Memory dumps for hang or performance issues, "automated" approach

Pingulea on Jul 23 2021 08:44 AM
Collect series of dumps to study why IIS slowness
3,394

Memory dumps for hang or performance issues, "manual" approach

Pingulea on Jul 23 2021 08:41 AM
Collect series of dumps to study why IIS slowness
2,228

Memory dumps at process termination, with optional first-chance dump

Pingulea on Jul 23 2021 08:32 AM
We may have some first-chance exceptions building up the “right” context for a second-chance exception to occur.
6,711

IIS Admin Service unable to start - How and Why it can happen?

ashfana on Jul 02 2021 09:59 PM
We often come across issue where IIS admin service fails to start with multiple error codes and often error codes points...
4,047

401 1 2148074248 in IIS logs behind a load balancer with multiple servers

MattHamrick on Jul 01 2021 12:07 PM
If you're receiving an unexpected 401 and IIS logs show this: 401 1 2148074248, this blog could be useful if you have th...
6,287

403.16 error : "Root certificate which is not trusted by the trust provider. (0x800b0109)"

Malathi_Pai on Jun 16 2021 09:15 AM
A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. (0x800b0...

Latest Comments

Lali_Ratnayake
in Web Management Service issue (2147483656) on Oct 07 2022 12:00 PM
I couldn't get the "Management Service Delegation" appear in IIS 10.0..17763.1 (running on Windows Server 2019), despite Web Platform Installer 5.1 showing that the following are already installed.- Web Deploy 3.5 without bundled SQL support- Web Deploy 3.6 without bundled SQL supportThe Control pan...
0 Likes
MattHamrick
in Modifying the .NET CLR ThreadPool Settings for ASP.NET 4.x on Oct 04 2022 11:00 AM
glad to hear it @ironfly!
0 Likes
NageshRudraiah
in DefaultAzureCredential failed to retrieve a token on Oct 01 2022 01:14 AM
Create environment variables for AZURE_CLIENT_ID, AZURE_CLIENT_SECRET, and AZURE_TENANT_ID (or)Add AZURE_TENANT_ID = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'AZURE_CLIENT_ID = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'AZURE_CLIENT_SECRET = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' values in .env file or sbx.env file which reso...
0 Likes
ironfly
in Modifying the .NET CLR ThreadPool Settings for ASP.NET 4.x on Sep 30 2022 08:12 AM
thanks @MattHamrick , that did the trick! had another app in the service plan, i added the min threadpool to its global.asax and the issue is resolved!
0 Likes
MattHamrick
in Modifying the .NET CLR ThreadPool Settings for ASP.NET 4.x on Sep 27 2022 10:44 AM
@ironfly the only time ASP.NET itself modifies the ThreadPool settings is during webapp startup. Thus, if you are observing the max/min counts changing afterwards, it either means your app is restarting or another app in the same worker process is being started (the default .NET ThreadPool is shared...
0 Likes