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IIS Support Blog
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447

ConfigurationErrorsException due to targetFramework mismatch

MattHamrick on Nov 15 2022 05:22 PM
Seeing the below exception in an ASP.NET application? If so then you can use this guide to figure out what's going on. E...
1,118

Certification Authority not showing up in IIS Server Certificates Dialog

Hugo_Durana on Oct 20 2022 03:30 PM
Got an Online Certification Auhtority that is not showing up in IIS when you are trying to renew a certificate? If so, t...
1,231

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...
2,251

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...
1,363

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...
1,710

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...
3,534

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
2,153

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...
4,653

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”
21.2K

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...
9,429

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 ...
1,978

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”
1,971

Invalid Content-Length

Nedim on Dec 14 2021 04:43 PM
“Invalid Content-Length” and “Server sends too much data” errors
2,695

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. ...
3,543

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...
7,074

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
4,539

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
3,468

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
3,850

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
2,592

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.
8,400

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...

Latest Comments

smasshed
in Error 2146893818 (Event 7024 Invalid Signature) on Nov 24 2022 01:51 AM
Just a heads up, if you have wsus on the server, it gets removed and you have to reinstall wsus.
0 Likes
Christian Schindler
in Service Principal Name (SPN) checklist for Kerberos authentication with IIS 7.0/7.5 on Nov 22 2022 04:58 AM
Wow! This helped me out! I scratched my head why a GMSA wouldn't work as an application pool identity with a custom SPN... Thanks a lot!
0 Likes
Simpuhl
in Keyset does not exist ( exception from HRESULT : 0x8009000D) or or 0x80090016 or 0x80090005 while ch on Nov 10 2022 09:11 AM
I am trying to do this after migrating from hyper-v to vmware (clone) but its not working. @JHerschel , was this all you did?
0 Likes
lizfranciss
in Keyset does not exist on Nov 07 2022 10:03 PM
Hi there, What do you do if these keys dont exist in the Machine Key File?
0 Likes
Arti_S995
in Connection string encryption and decryption on Nov 04 2022 04:05 AM
Hi, can you please tell decryption steps for the Web Farms(using RSA Key)
0 Likes