Common Errors with SharePoint and their Solutions

I thought to create a ground for listing out most of the MOSS errors I have encountered and their solutions, so that they might be useful to some of the MOSS developer buddies.
And this list would be appended as I encounter the issues and their resolutions.

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#1)Connecting the Portal with sharepoint designer
The first error I encountered when trying to open the Portal using Sharepoint Designer is as follows:
"The Folder xxxxxx isint accessible. The folder might be located in unavailable location,protected with a password, or the file name contains a/ or \".

After struggling with issue for a while, I found that there are a quite a few locations in Central Administration which will help us to resolve this error.

Steps Of resolution:

1) Log into Central Administration
2) Navigate to Applications -- > Application Security -- User permissions for Web Applications.
3) Select this option
"Use Remote Interfaces - Use SOAP, Web DAV, or SharePoint Designer interfaces to access the Web site"
3) Navigate to Applications-- > Application Security -- Authentication Providers
4) Choose the appropriate zone and click on that
5) Choose "YES" for Enable Client Integration

It did the trick and after that am able to connect to the portal with SPD without any issues.
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