Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) [Updated]

The title of this post is common error for .net developers. Sometimes, when you try to run your project, you may get this error

Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))

There is a number of blog posts available on different websites. I have clubbed them here for quick view. Follow them step by step, that may resolve the issue.

Dynamically changing META Tags in MasterPages from ContentPage

In addition to one of my previous article reference regarding Changing Page Title and Meta Tags with Master Pages.

The earlier method doesn't work in some cases so I was looking for some proper method.
And finally I have found another method of changing meta tag values.

You can visit the following website that describes the content with proper example.

Storman.aspx - In SharePoint have you ever visited this page?

I was not aware before  I read this article. It describes a lot about the importance of Storman.aspx.

Infect it describes you the benefit of it and the use of that page in SharePoint 2010.

SharePoint Admins, if you don't know Storman.aspx, you are loosing a lot....!

Do visit the below link to read full article.

ALTER DATABASE failed because a lock could not be placed on database 'linkoblast_DB'. Try again later. Msg 5069, Level 16, State 1, Line 4 ALTER DATABASE statement failed.

Sometimes when you try to take your database offline. As soon as you run the process, you may face issue with following error message:

ALTER DATABASE failed because a lock could not be placed on database 'linkoblast_DB'. Try again later.

Msg 5069, Level 16, State 1, Line 4 ALTER DATABASE statement failed.

Below is the simple solution to this error message:

An unknown error occurred while processing the request on the server. The status code returned from the server was: 500

Whenever you face the below error message

An unknown error occurred while processing the request on the server. The status code returned from the server was: 500

you can follow the steps and update you code files to come out from the error