Issue: Calendar list is Missing in SharePoint 2010

Issue: 
Calendar list is Missing in SharePoint 2010.


Reason:
The required "site feature" may not be activated in the SharePoint portal.


Solution: 
1. Go to the "Site Settings"
2. Go to "Manage Site Features"
3. Check "Group Work Lists" feature is activated or not. If not, Activate the feature.

Thats it... 


Update:
If you are not able to view / create lists or document library or task library, you need to activate the "Team Collaboration Lists" site feature.

Error occurred in deployment step 'Recycle IIS Application Pool': The local SharePoint server is not available. Check that the server is running and connected to the SharePoint farm

Error:

Error occurred in deployment step 'Recycle IIS Application Pool': The local SharePoint server is not available. Check that the server is running and connected to the SharePoint farm.

Reason:

You will get this error, when you are trying to deploy the web part/solution through visual studio. The reason is the current logged-in user may not be the "db owner" in the content databases.

Solution:

To deploy the solution successfully, you need to map the current logged-in user as db_owner into the 3 databases.

1. SharePoint_Config

2. SharePoint_Admin_[GUID]

3. Your current web application that needs to deploy the Web part

For more info, check the below screenshot.

Thats it...

The Web application at could not found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.

Error:

The Web application at could not found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.

Solution:

change the visual studio solution to 64 bit in properties as per the below screenshot.

Thats it...

Error: The type or namespace name 'SPSite' could not be found (are you missing a using directive or an assembly reference?)

Error:

The type or namespace name 'SPSite' could not be found (are you missing a using directive or an assembly reference?)

Reason:

Sometimes you will get this issue, while you are testing/developing your SharePoint code through console applications.

By default, visual studio 2010 will set target framework as ".Net Framework 4 Client Profile"

Solution:
We need to change the target framework as ".Net Framework 3.5"

To do this,

1. Go to Solution property in visual studio.

2. Change the target framework to ".Net Framework 3.5" as below:

3. Save all & build the solution.

Thats it...