Finally figured it out that one of the reason to get the 401.2 error was because Authentication modules were not installed. Make sure you have your desired Authentication modules (i.e. Anonymous Authentication) installed in IIS. To verify go to IIS Manager -> Select root -> Select Authentication.
How to fix the error 401?
Remove password protection
Check the URL for errors
Clear cache and cookies
Disable all plugins
Change Default to Theme
Flush Your DNS
Reset WordPress Password
Contact your WordPress hosting provider.
How to fix InstallShield error 401?
Repair InstallShield. Press (CTRL+ALT+DELETE) to display the task manager keys. Then go to Processes tab, you need to disable idriver.exe and msiexec.exe. Daily world technology news. Process Tab You should now navigate to “C:Program FilesCommon Files”.
How to fix Minecraft error 401?
After purchasing an uninstalled Minecraft, restart your computer for the changes to take effect.
Download the latest version of Java Minecraft here.
Restore all saved data and means you have selected your business game.
How to fix Microsoft SharePoint error 401 Unauthorized?
Check the URL: Due to manual errors, rewriting the URL may result in an invalid 401 error.
Flush DNS: Errors in DNS will also sometimes cause a 401 error to appear.
Clear browser cookies: In some cases, cookies may not work properly and result in incorrect forum authentication.
More articles
How does Windows Authentication 401 work in IIS?
Here’s how it usually works: The client is on the side of the application. IIS returns an HTTP 401 response with a header indicating that most of them accept Windows authentication. The client browser automatically resubmits the request based on the user’s credentials (if the site is trusted). IIS validates and the user passes the certificates to the application.
Can a 401 error handler prevent a 401 callback?
This means that a trusted callback with a 401 status code will permanently prevent an error callback from being used, and vice versa. If your 401 error returns, the two most important error handlers will appear, and the 401 callback will almost certainly be called.
What is two factor authentication how two factor authentication works when can users be prompted for two factor authentication What are the steps to set up the two factor authentication for every login?
Tap Settings > Security > Two-Factor Authentication. First option: turn on text messaging and add your phone group (add country code because Instagram is everywhere). You will receive confirmation of the rule via SMS. Enter it. Option 2: Enable application-related authentication.
What does 401.2 and 401.3 mean?
401.2: This error is a connection failure due to server configuration. 401.3: This error indicates a connection failure to the access control list (ACL) for the resource. 401.3: This error indicates that authorization has completed and the filter has undoubtedly failed.
Is the Status Code 401 really a 401?
Status code 401 received from host: Unauthorized. Is this really the last 401 error? Or is the URL misrecognized and trying to reach a truly authorized endpoint? If it’s real, then why? It’s a district warehouse with community packages. I can anonymously export a package directly from the GitHub page. What am I doing wrong in Gradle?
How do I fix 401 unauthorized error IIS?
- Open IIS and select the network causing the 401 error.
- Select the authentication domain in the IIS header.
- Select anonymous authentication.
- Right selection. If you select it, change it and find out the Application Pool ID.
- Restart the site and it should work.

Vijay is a tech writer with years of experience in the Windows world. He’s seen it all – from simple problems to catastrophic system failures. He loves nothing more than helping people fix their PCs, and he’s always happy to share his wisdom with anyone who needs it.
When Vijay isn’t fixing Windows problems, he likes to spend time with his wife and two young children. He also enjoys reading, playing cricket, and watching Bollywood movies.