Here’s what some of the readers suggested: ( particularly around the settings of 2.5ghz and 5 GHz router settings). On the other hand, if you have performance issues with Wi-Fi after updating to macOS Catalina, take a look at the suggested ideas here. If you are able to connect to a strong Wi-Fi and access the internet without any issues, let’s move forward. Check your connectivity on MacĪre you able to connect to your Wi-Fi and do you have a strong signal via the network? Are other Apple devices able to connect to this Wi-Fi and access app store? Check using your iPhone or iPad. In this section, we want to rule out these basics before we explore some of the specific App Store problems. The most common reasons why the app store may not be working on your Mac are poor Wi-Fi connection, different Apple ID, proxy setup in-network, VPN setup with enhanced security settings or the Apple systems are down. Let’s get the basics covered before we move on to App Store specific issues on macOS Catalina. Why is the App Store not working on macOS Catalina? Mail not working in macOS Catalina, How-to fix.How to use Finder in macOS Catalina to Sync and Restore iPhone

How to transfer Custom RingTones from macOS Catalina to iPhone.

Need to run 32-bit apps on macOS Catalina? Use a Mojave virtual machine.

Create a new admin user and see if you can open the Mac App Store using that new user account.

Update using a combo macOS update download rather than an app store update.

Reset your cache of accepted certificates.

Remove App Store cache folders from your User’s Library’s Cache.

And verify your selected country is correct

Change your Date & Time Preferences to something other than your current time zone and region.

Shut Down and then power up (DO NOT USE RESTART–perform a full shut down).

Once the app store opens, try updating the apps

Quit App Store and reopen holding the Shift Key on the left side of the keyboard.

Open FaceTime or iMessage and log in using your Apple ID (or sign out and then back in)– that often jump-starts your Apple Service apps including the App Store.

Update or reinstall your macOS using a combo update.Reset your cache of accepted certificates and check.Clear App Store Cache Files from MacBook and check.Mac App store blank screen and other issues on macOS Catalina.Unable to Install New apps on macOS Catalina, Fix.Unable to update apps in macOS Catalina, Check these tips.Check Apple Server System status for Mac App Store.Why is the App Store not working on macOS Catalina?.

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