Solution:

You may query the TFS cube thru excel to pull the information. Select the fields and configure as shown in the below screenshot.

Explanation:

AcceptYours - Local version is to be used for merge
AcceptTheirs - Server version is to be used for merge
AcceptMerge - Resolve conflict by doing manual merge

Explanation:

Visual Studio 2010 can't use the local workspaces created using Visual Studio 2012 or higher versions. The local workspace feature was introduced starting Visual Studio 2012.

Solution:

Create the workspace using Visual Studio 2010 to share or use the same workspace across Visual Studio 2010 and higher versions.

Solution:

"Find by Status" and "Find by Wildcard" plug-ins are from TFS power tools. You need to install TFS power tools to gain access to "Find by Status" and "Find by Wildcard" menus.

Exception: 

Explanation:

This exception may appear when the lab environments exist with no lab systems.

Workaround:

• Open Microsoft SQL Server Management Studio.
• Connect to the TFS collection database where your team project exist. 
• Run the following SQL query to identify the lab environments with no lab systems:

Select le.LabEnvironmentId from LabEnvironment le where le.PartitionId = 1 And NOT EXISTS (Select * From LabSystem ls where ls.LabEnvironmentId = le.LabEnvironmentId AND ls.PartitionId = 1)

• Note the Id's of the lab environment with no lab systems.
• Remove all lab environments with no lab systems, by using the following SQL command for each lab environment IDs:

Exec DeleteLabEnvironment @PartitionId = 1, @labEnvironmentId = <Lab Environment ID>, @namespaceGuid = N'9E4894C3-FF9A-4EAC-8A85-CE11CAFDC6F1', @deleteTestMachines = 1, @pendingOperationId = Null

Exception:

Explanation:

The “Bug on the Backlog” feature is invalid for the projects that uses scrum process template. Bugs have always been on the backlog for scrum teams. This feature will be enabled or valid only for the projects created using MSF Agile and MSF CMMI process templates.

Solution:

Execute the following SQL script on the Tfs_Configuration database to remove the SCVMM setting:

Update [Tfs_Configuration].dbo.tbl_RegistryItems set RegValue = ' ' where ChildItem like 'VmmServerName%'
Update [Tfs_Configuration].dbo.tbl_RegistryItems set RegValue = ' ' where ChildItem like 'DnsSuffix%'
Update [Tfs_Configuration].dbo.tbl_RegistryItems set RegValue = ' ' where ChildItem like 'IPBlock%'

Solution:

Type the following command in the command line window.

net user /Domain <Domain Account ID>

Exception:

TF208101: You cannot access the Analysis Services database because you have specified alternative credentials and you do not have permission on your computer to impersonate another user

Explanation:

The TF208101 error occur when trying to create Excel Reports from a TFS query using Visual Studio IDE

Solution:

1. Right-click the visual Studio IDE icon or shortcut, and then click Run as administrator.
2. Export the work item query to excel.

Explanation:
You may experience "User Story" (MSF Agile template) or "Product Backlog Item" (Scrum template) or "Bug" (Scrum template) work item templates take long time to save when added to "Requirement" category in TFS 2012. These work items save in no time when removed out of "Requirement" category.

Requirement category in scrum template

   <CATEGORY refname="Microsoft.RequirementCategory" name="Requirement Category">
    <DEFAULTWORKITEMTYPE name="Product Backlog Item" />
    <WORKITEMTYPE name="Bug" />
   </CATEGORY>

Requirement category in MSF agile template

  <CATEGORY name="Requirement Category" refname="Microsoft.RequirementCategory">
    <DEFAULTWORKITEMTYPE name="User Story" />
  </CATEGORY> 

Solution:
The mentioned behavior is a known issue. Hotfix available at https://support.microsoft.com/en-us/kb/2938788