Newly upgraded to Latest released OS X - El Capitan (10.11.5). Now when I open App Store app, the spinning wheel to right of < > buttons on upper left side continues to spin with no content visible below on any tab button. Originally, I saw that 1-update was available. I read an earlier note to use Activity Monitor and kill processes related to App Store. Saw 2 that had long process times (storeassetd, storedownloadd). Plus now see App Store Web Content in "(not responding state). How do I fix this???
4 Answers
- Go to Finder and press ⌘ + Shift + G;
- Locate
~/Library/Caches/com.apple.appstore
and deletecom.apple.appstore
which are cache files; - Then press again those commands and go
/private/var/folders
, open each folder and each subfolder until you findcom.apple.appstore
and delete this folder; - Restart your Mac.

- 568
For me, the command that resolved this was:
sudo softwareupdate --clear-catalog
(Found here: https://apple.stackexchange.com/a/221419/238906)

- 100,768

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1Bear in mind, is for resetting the System Updates url for macOS. The OP is asking about App Store. Two different things. – Danny A Nov 18 '19 at 15:43
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6
After hours of trying different ways of re-installing an app from the App Store (deleting the app in Launchpad, enabling app store debug menu and resetting application, rebooting, etc) the only thing that worked for me was deleting the following folders and rebooting:
~/Library/Caches/storeaccount
~/Library/Caches/storeassets
~/Library/Caches/storedownload
~/Library/Caches/storeinappd
After this I was finally able to see an "Install" button next to the app I deleted rather than an "Open" button. In addition, 5 other apps I had deleted were originally showing under the Updates tab as having updates. After deleting the above 4 folders, those apps were no longer showing up under the Updates tab.
I think it's absolutely ridiculous that there isn't an easier way to re-download/re-install an app from the App Store.

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I have tried all of this. What I have done is delete the App Store key chain entry in Finder, Application, Utilities, Keychain Access and then search for appstore. Delete just that one. (MacOS Catalina).

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Can you please provide more details on how to achieve this? None of the previously mentioned solutions work in Catalina. Thanks – Chris Dec 19 '20 at 03:07
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Hi Chris! I just done that. First go to Finder, then Application and so on as my answer described. Please, follow that and let me know. – Ignacio Dec 19 '20 at 11:16
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Hi, thanks, I am just not sure what exactly I should be deleting. Can you please be more specific in what files I need to delete, thanks! – Chris Dec 21 '20 at 02:13
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Chris, there you will find lot of entries, like a list of items. One of them may be called appstore or similar. Delete just that. I cannot be more specific because it is just that. Perhaps you don't have that item (or file). Hope you find it! – Ignacio Dec 21 '20 at 11:17
~/Library/Caches/
and find folders thecom.apple.appstore
,storeaccount
,storeassets
,storedownload
andstoreinapp
. Delete these folders. Then go again to/private/var/folders/
. At/private/var/folders/
, there are two subfolders, go to the first subfolder and then go to that folder and after to the folder C that cointains the foldercom.apple.appstore
. – Censored Name Jul 11 '16 at 01:38The directories were somewhat different, though, but just delete everything that has something to do with
– uvesten Jan 14 '19 at 15:42appstore
under~/Library/Caches/
sudo find /private/var/folders/ -iname 'com.apple.appstore' 2>/dev/null | while IFS='' read -r line; do rm -fr "$line"; done; rm -fr ~/Library/Caches/*store*; ps aux | egrep -i 'app.?store' | awk '{ print $2 }' | while IFS='' read -r line; do kill -9 "$line"; done
Stupid, stupid, stupid-stupid-stupid software. – Jan Kyu Peblik Oct 07 '19 at 14:29