Getting World of Warcraft error 108 (0x8510006c) rarely occurs if you have recently swapped your system or user.\n\n\n\nTo fix World of Warcraft error 108 (0x8510006c), you just need to update the client and game or you by deleting the cache folder if you're a window user, and the Mac users just check for any pending updates for the Battle.net or for the game and another way to fix it by deleting " cacsrepair.mrk " file from World of Warcraft > Data > Data > cacsrepair.mrk.\n\n\n\nIf the problem still exists buckle up we just have to go a little deep in folders to solve it.\n\n\n\nWhat is error 108 World of Warcraft?\n\n\n\nError 108 in World of Warcraft appears When players attempt to log in to their Battle.net account through a different system, like switching it from a personal computer to a friend's computer to play it.\n\n\n\nSurprisingly, the issue occurs often when an account switch is registered on different computers ( like from windows to mac os ) and attempts to connect to their WoW account on that machine with low bandwidth connection speed as a result game failed to synchronize properly.\n\n\n\nBut sometimes the 3rd party antivirus software can also be the culprit by blocking any game file from execution.\n\n\n\nHow do I fix Error 108?\n\n\n\nThere are main 4 methods through which the error 108 in World of Warcraft can be resolved.\n\n\n\nIt's mainly occurring with mac users so ill first mentions all the possible ways to fix World of Warcraft Error 108 for mac users but down there I have also mentioned the fix for Windows users. \n\n\n\nFor Mac OS X users\n\n\n\nThe first thing you should have done after getting the error is that your Mac is to check that is your mac os is updated to the latest version or not. \n\n\n\nIf you haven't done it yet then simply open App Store > Updates. If you see any update regarding the os or game client you have downloaded from the app store, please download or update it to the latest version.\n\n\n\nChecking for any available updates for your Mac computer:\n\n\n\nOpen the App Store app -> select Updates in the App Store toolbar\u00a0Download and install the updates by clicking on the Update button.If you are running OS X Snow Leopard or Lion, click on the Apple icon and select Software Update.\n\n\n\nBut if you are running your mac on macOS 10.13( or lower than this ) then you have to update to a minimum of 2 versions up to 10.13 like 10.15 or 11 to able to play the game.\n\n\n\nInstalling the Battle.net app and World of Warcraft on the same drive\n\n\n\nIf you have installed World of Warcraft on an external drive and Battle.net Launcher on the internal drive, then, that explains why you\u2019re getting error 108 (0x8510006c). There could be 2 main reasons to trigger these issues first can be the permission issue while fetching data from secondary storage when the Battle.net app tries to run the game from another drive with saved config files.\n\n\n\nAnd one more important thing,\n\n\n\nAs FileVault option and case-sensitive formatted volumes are not supported for the installation of Blizzard games.\n\n\n\nSo make sure not to use the external drive to install the game or if you are using an external drive then install both Battle.net and Wow game files in the same drive.\n\n\n\nWow installed on the correct machine as per the required specification\n\n\n\nMentioned below is the recommended hardware and software specification to install and run World of Warcraft.\n\n\n\n\n\n\n\nDelete the file cacsrepair.mrk\n\n\n\nAfter investigating Reddit and many gaming forms I discovered that deleting the cacsrepair.mrk file from your World of Warcraft > Data > Data folder has resolved the issue, so give it a go.\n\n\n\n\n\n\n\nResolve any file corruption problems.\n\n\n\nIt will take some time to repair files but if the notice \u201c Scanning game files " also accompany it. The best option is to restore damaged game files to solve the scanning game prompt and problem 108.\n\n\n\nFollow these steps exactly and you're good to go:\n\n\n\n1. Delete the files and folders listed below from Battle.net and World of Warcraft:\n\n\n\n\/Users\/Shared\/Battle.net\/Agent\/Agent.db \/Users\/Shared\/Blizzard\/Battle.net.temp (if existing)\n\n\n\n\/World of Warcraft\/WoW.mfil (if present) \/World of Warcraft\/Data\/config\n\n\n\n2. Make the following changes to the World of Warcraft folder permissions:\n\n\n\nLaunch the Finder > go to the WoW main folder > Get Info Click the padlock icon > enter your password Go to the Everyone group > set Read and Write Select Apply > click on OK > closer the Get Info window.\n\n\n\n3. Now repeat steps 3 through 4 on the \/Users\/Shared\/Battle.net folder.\n\n\n\n4. Launch the Battle.net app > select World of Warcraft\n\n\n\n5. Press Update and wait for the program to rebuild WoW\u2019s CASC index files.\n\n\n\nBe aware that this procedure may take up to 60 minutes, so be patient. Do not click anything until the whole procedure is finished. It\u2019s possible that clicking Play before the upgrade and patching procedure is finished may result in additional file corruption problems.\n\n\n\n6. When the progress bar has vanished, click Play to start the game.\n\n\n\nRe-installing the game and Battle.net Launcher\n\n\n\nIf nothing worked, first try to uninstall and reinstall the game, but if the problem still exists then reinstall the Battle.net app.\n\n\n\nDownload it from the official site of Battle.net. After downloading and installing the launcher just check for any updates and update it if available.\n\n\n\nIf it keeps updating over and over from 0 to 100% or starts again and then removes its residual app data which is left after uninstalling the game.\n\n\n\nTo remove it completely I'll suggest you install Appzapper and drag the battle.net from the Application folder or from launchpad to the AppZapper.\n\n\n\nIt will show you all the files associated with it then simply check all the files and click on Zap! and just reinstall Battle.net and again check for any updates and install the game.\n\n\n\nFor Windows users\n\n\n\nWindows users haven't faced any issues regarding it but if you caught unlucky then just try these steps and wallah.\n\n\n\nRunning the Battle.net in Administrator mode\n\n\n\nSimply running Battle.net in Administrator mode has solved the issue of many players. Just Right click on Battle.net and select to run as Administrator.\n\n\n\nDone and also just to keep that problem off from your system just go through all these steps mentioned down there. \n\n\n\nChecking for updates\n\n\n\nTo check for any available updates on your Windows computer just, go to Start > type system updates > double click on Windows Update Settings > click on the Check for updates button and install the updates available for your computer.\n\n\n\nAlso, check Battle.net for any updates from launcher settings.\n\n\n\nPerforming the repair\n\n\n\nCorrupted and damaged game files can cause a wide variety of problems and errors.\n\n\n\nUpdating the game can often resolve these issues, please check for game updates before using the repair tool.\n\n\n\nOpen the Battle.net desktop app.Click the icon of the game you are trying to repair.Click the cogwheel next to the Play button and select Check for Updates.\n\n\n\nIf your game is up-to-date and the problem persists, use the repair tool:\n\n\n\nClick the cogwheel next to the Play button and select Scan and Repair.Click Begin Scan.Wait for the repair to finish.\n\n\n\nAside from these game developers have already fixed this issue but if the problem still exists then you can contact or create a support ticket from Battle.net by using this link.\n\n\n\nFrom the official support, your problem should have been resolved, if not feel free to contact us we are happy to help you.