Tag: iis

IIS Redirect HTTP to HTTPS

Once the SSL certificate is installed, your site still remains accessible via a regular insecure HTTP connection. To connect securely, visitors must specify the https:// prefix manually when entering your site’s address in their browsers. In order to force a secure connection on your website, it is necessary to set up HTTP to HTTPS redirection …

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ASP.NET Error Validation of viewstate MAC failed


In some environments the following error may occur for ASP.NET: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. There are a few reasons of this error and you can solve …

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IIS Error The specified password is invalid. Type a new password.


The specified password is invalid. Type a new password. You have two options here. The first one is quick and easy – set a password directly in %system32%\inetsrv\config\ApplicationHost.config file in clear text. For obvious reasons I don’t recommend do this in such a way:

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IIS error 503 Application pool identity is invalid


Problem After setting custom identity for IIS Application Pool you are experiencing error 503 Service Unavailable in browser and in System section of Event Log on server you may find the following warnings and errors: Event ID 5021: The identity of application pool x is invalid. The user name or password that is specified for …

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503 service unavailable compdyn.dll failed to load


After moving of IIS site to another server we started receiving 503 Service Unavailable error in browser. Event Viewer showed the following in Application Log: Log Name:      Application Source:        Microsoft-Windows-IIS-W3SVC-WP Date:          7/6/2017 12:46:10 AM Event ID:      2280 Task Category: None Level:         Error Keywords:      Classic User:          N/A Computer:      <computer_name> Description: The Module DLL C:\Windows\System32\inetsrv\compdyn.dll failed to …

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