Question

below error message pop-ups whenever i start any solutions…..of VS2010

what should i have to do for come out of it???

Answer 1

I think this fellow explains the solution very well for you:

Add LOCALAPPDATA Environment Variable in Windows XP

LOCALAPPDATA is one of the new environment variables included in Windows Vista, which points to the folder that stores the data for local (non-roaming) applications. To access the folder, run the command %LOCALAPPDATA% from Start, Search box in Windows Vista. This variable does not exist in earlier Windows Operating Systems. If you access this folder frequently in your Windows XP system, you may add the LOCALAPPDATA variable using the steps below.

Note: Alternately, you can open the Local Application Data folder in Windows XP and Windows Vista by running the command shell:Local AppData.

Add LOCALAPPDATA variable in Windows XP

• Right-click on the My Computer icon
  and choose Properties
• Click Advanced
• Click Environment Variables
• Under User variables section, click
  New
• In the Variable name: field, type
  LOCALAPPDATA
• In the Variable value: field, type %USERPROFILE%\Local
  Settings\Application Data
• Click OK, OK, OK to close the dialog
  boxes.

The LOCALAPPDATA environment variable is now added.

Since this is a “user” variable you won’t have to reboot to use the variable.