The error is a common bug among all games publishes by Blizzard and there have been many successful ways to fix it in different scenarios. We have gathered working methods from around the Internet and gathered them in a single article for you to check out. Good luck!
What Causes the Error ‘Waiting on Another Installation’
Well, the problem is sometimes caused by a bug with the Battle.net Update Agent which tried to check for updates and it got stuck searching for them, preventing any other downloads or updates to be installed. Also, there might be problems with the launcher which is outdated yet it fails to update itself, leading users to have to install the latest version themselves or it’s the download cache folder which needs to be reset. Finally, even changing DNS settings for your internet connection may affect the launcher negatively, causing you to have to reset them to default settings. Peer-to-peer client and game updates also need to be disabled in certain scenarios in order to solve the problem.
How to Fix Waiting on Another Installation or Update (Battle.net)
Solution 1: Kill a Certain Process
If the error simply won’t go away, the problem may be the Battle.net client’s Update Agent which looks for updates for the client itself. It should just check if there are updates and install them automatically if they are found. However, if the problem won’t go away, the process has become buggy and you should kill it using Task Manager.
Solution 2: Boot into Selective Startup
Booting into selective startup should get rid of certain background apps and programs which way have affected the Battle.net desktop app and they may have prevented it from updating properly. Selective startup only boots certain parts of your computer and it should help you deal with your problem.
Solution 3: Pause all Updates
If there are indeed certain updates waiting to be downloaded or installed for either one of the games you own in the client or for the client itself, you can simply put them on hold if you want to play a game. Simply open up your Battle.net client to make sure its processes are running and head for the system tray (lower right part of your screen). Right-click the Battle.net icon in the tray and choose the Pause all updates option. Try running and playing the game now.
Solution 4: Reinstall the Battle.net Launcher
There was an official statement by Blizzard that this launcher has experienced some bugs in that specific release and they have prompted users to reinstall the tool in order to perform a manual update instead of the automatic one carried out by the client. Make sure you try this out before giving up as it won’t take a lot of your time.
Solution 5: Clear DNS Settings to Default
This fix is especially useful for people who have changes their default DNS settings from the default values to something else (such as free DNS addresses by OpenDNS or Google). This will block the client from updating properly and you might have to revert your settings to default for the sake of installing this update. It’s easy to do so if you follow the steps below!
Solution 6: Disable the Hamachi Adapter
LogMeIn Hamachi is a virtual private network (VPN) application that is capable of establishing direct links between computers that are behind Network address translation(“NAT”) firewalls by simulating a LAN connection which can be useful for playing games over LAN with distant computers. Still, the software requires its own drivers and network adapters which can sometimes cause errors like this so it’s recommended you disable it at least until this update is installed and the error disappears.
Solution 7: Delete a Battle.net Folder
Deleting a certain folder might reset certain settings used by the client. Sometimes these files are not altered even when the file has been uninstalled so it’s up to you to delete the contents of this folder in order to repair the client. First of all, you will need to close the Battle.net app and kill all processes related to it (Agent, Blizzard Battle.net desktop app, and game processes).
After that, it’s time to delete the contents of the Battle.net folder in ProgramData. C:\ProgramData
Solution 8: Run the Client as an Administrator
Running as an admin provides extra privileges for the app you are running which sometimes brings unwanted security questions but the client by Blizzard is not malicious software so there is nothing to worry about. You can choose to run the app as admin once or each time, depending on the scenario.
Solution 9: Disable Peer-to-peer
Some networks are quite sensitive when it comes to peer-to-peer networking because of various security reasons so it’s recommended that you try disabling this option from within the game launcher in order to resolve this problem as this has worked for several users online.
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