This guide gives solutions to common problems you’ll encounter in Steam, from games crashing or not working properly to Steam failing to launch.However, this may not always solve the problem – if the problem has already started occurring, the gameplay may be glitchy until you relaunch the game.
You’ll have to restart Steam after changing this setting.
Right-click your taskbar and select Start Task Manager to open the task manager.
then write something like this, ("This applet is to fix verification issues involving Portal 2.", make sure that you include the speech marks and comma at the end.
Now we will just write 16, "Verification error Fix app Info") this just specifies the popup box icon and the title bar text.
(if this doesnt work try using common instead.) replace [gamename] with the name of your game replace [game name id] with one of the names and ids below in this format Portal 2 400 Name=Dedicated Server  Name=Counter-Strike  Name=Team Fortress Classic  Name=Day of Defeat  Name=Deathmatch Classic  Name=Opposing Force  Name=Ricochet  Name=Half-Life  Name=Condition Zero  Name=Condition Zero Deleted Scenes  Name=Half-Life: Blue Shift  Name=Source Dedicated Server  Name=Source SDK  Name=Source SDK Base  Name=Source SDK Base - Orange Box  Name=Half-Life 2  Name=Counter-Strike: Source  Name=Half-Life: Source  Name=Day of Defeat: Source  Name=Team Fortress 2 Dedicated Server  Name=Half-Life 2: Deathmatch  Name=Half-Life 2: Lost Coast  Name=Half-Life Deathmatch: Source  Name=Half-Life 2: Episode One  Name=Portal  Name=Half-Life 2: Episode Two  Name=Team Fortress 2  Name=Si N Episodes: Emergence  Name=Sin Episodes SDK  Name=Dark Messiah Might and Magic Single Player  Name=Dark Messiah Might and Magic Multi-Player  Name=Dark Messiah Might and Magic Dedicated Server  Name=Dark Messiah SDK Beta  Name=The Ship  Name=The Ship Dedicated Server  Name=The Ship Single Player  Name=The Ship Tutorial  Name=Garry's Mod  Name=Zombie Panic! Source Dedicated Server  Name=Age of Chivalry  Name=Age of Chivalry Dedicated Server  Name=Synergy  Name=Synergy Dedicated Server  Name=D.
In computing, Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.
Hundreds of document formats using XML syntax have been developed, including RSS, Atom, SOAP, SVG, and XHTML. are based on XML and the rich features of the XML schema specification.
XML-based formats have become the default for many office-productivity tools, including Microsoft Office (Office Open XML), Open and Libre Office (Open Document), and Apple's i Work. Apple has an implementation of a registry based on XML. Many of these standards are quite complex and it is not uncommon for a specification to comprise several thousand pages.
Be sure to close Steam completely (click the Steam menu at the top of the Steam window and select Exit) before deleting this file.
Steam will examine the game’s files and – if any problems are detected – will re-download the corrupted files from Steam’s servers.
If you already know how to set up a vbscript you can skip this step. Dedicated Server  Name=Eternal Silence  Name=Eternal-Silence Dedicated Server  Name=Dystopia  Name=Dystopia Dedicated Server  Name=Insurgency  Name=Insurgency Dedicated Server NOTE: if your operating system is 32 bit then make sure that you write just Program Files instead of Program Files (x86) the vbyesno portion will give the popup box the yes and no buttons allowing other sections of the script to use the result.