Fix battle.net 2600 error

Recently I tried to install the latest patch for Heroes of the Storm when I got a nasty error code 2600, Whoops! something broke.

wrong

Re-installing battle.net didn’t fix the issue. After much frustration I came across this post, which describes situations when you’re behind a caching proxy (which I am.)

I did as it directed, which is to disable the caching function of my proxy and delete anything Blizzard-related from my %temp% folder.

That did the trick. All is well now!

Update: I decided that rather than disabling caching / virus checkings completely I would create an exception in Sophos UTM web access policy. Thanks to the guidance from here I added the following exception:

blizzard
Skipping: Authentication / Caching / Block by download size / Antivirus / Extension blocking / MIME type blocking / URL Filter / Content Removal / SSL scanning / Certificate Trust Check / Certificate Date Check
Matching these URLs: ^https?://([A-Za-z0-9.-]*\.)?blizzard\.com/
^https?://([A-Za-z0-9.-]*\.)?blizzard\.vo\.llnwd\.net/
^https?://([A-Za-z0-9.-]*\.)?blizzard.com\.edgesuite\.net/
^https?://([A-Za-z0-9.-]*\.)?battle\.net/

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