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“Battle.net detected the game version you are using does not match Blizzard game servers.”Game Version Does Not Match Game Servers
“Battle.net cannot launch Agent or AgentSwitcher upon startup. Agent and AgentSwitcher may have permission conflicts, missing, or corrupted.”Failed to Launch Agent or AgentSwitcher
“Battle.net detected that your video card driver is out of date or incompatible for the selected game. ”Out of Date or Incompatible Video Card Driver
Keywords: BLZBNTBNA0000012C, BLZBNTBNA0000012D, BLZBNTBNA0000012E, BLZBNTBNA0000012F
“If you experience a crash with a blue or black screen error message, a crash to your desktop, or if your computer completely locks up while in Battle.net, follow the steps below to resolve the issue.”Battle.net Lockups and Crash Errors
“The Battle.net client logged you out because your account was logged in elsewhere. This can happen if you share a Battle.net account with family members or if you use multiple computers to log in from…”Battle.net Session Expired
“The Battle.net installer can't continue because it detected a file already named Battle.net. If you created this file manually, it may cause installation or patching issues.”File Named Battle.net Error
Keywords: BLZPTS0000L, BLZBNTBTS0000L, BLZBNTBTS0000000E
“Battle.net is unable authenticate your connection to Battle.net servers.”A Security Certificate Error Occurred
“Battle.net is unable to display content due to a connection issue or a temporary server issue.”An Error Occurred Retrieving Content
Keywords: BLZBNTBNA000003E8, BLZBNTBNA000007D0
“Follow the steps to enable or disable Vertical Sync.”How to Enable or Disable Vertical Sync
“Battle.net does not have permission or adminstrator rights to read the selected folder. ”Invalid Permissions to Read Folder Contents
“Battle.net is unable to find your game installation in the directory selected. ”Unable to Locate Game
“Battle.net is unable to access or download a configuration file to load installed games. ”Battle.net is Unable to Load Installed Games
Keywords: BLZBNTBNA00000065, BLZBNTBNA00000066, BLZBNTBNA00000067
“The Battle.net Update Agent is missing from your computer, and Battle.net is unable to download another copy.”Battle.net Update Agent Cannot Be Found
“Battle.net failed to communicate with the Battle.net Update Agent.”Cannot communicate with Battle.net Update Agent
Keywords: BLZBNTBNA00000005, BLZBNTBNU00003
“A hidden backup file required for the Battle.net Update Agent is corrupted or could not be found. ”Battle.net Update Agent Registry File Missing or Corrupted
Keywords: BLZBNTAGT00000976, BLZBNTAGT00000977, BLZBNTAGT00000978, BLZBNTAGT00000979