Something Bad Happened.
Fix: Something Bad Happened.
Unknown layout specified in manifest again.

Step 1: OpenSettingsby pressingWin + Iand clickTime & Language.
Some users tried it and have proved it can be useful.
It can resolve problems that may prevent Windows Store apps from working properly.

Step 1: Go toSettings > Update & Security > Troubleshootand clickAdditional troubleshootersfrom the right panel.
Step 2: Scroll down to the bottom to chooseWindows Store Appsand selectRun the troubleshooter.
Then the tool will start detecting problems and you might follow the instructions to repair the issues.

Fix 3: Run SFC
The corrupted system files can lead to the Something bad happened error.
Step 1: TypeCommand PromptinSearchand chooseRun as administrator.
Step 2: Copy and paste this command sfc /scannowand pressEnterto execute this command.

You may reset the Windows Store to get a fresh start when it malfunctions.
Step 1: OpenSettings > Apps > Apps & features.
Step 2: Scroll down from the right panel to locateMicrosoft Storeand clickAdvanced options.
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Step 1: OpenSettings > Update & Security > Recovery.
Hope this article is useful for you.