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You may want to run DISM command first at least to see if there is corruption. Scannow won't fix anything if the Windows component store is corrupted.
DISM - Repair Windows 10 Image - Windows 10 Forums
You may want to run DISM command first at least to see if there is corruption. Scannow won't fix anything if the Windows component store is corrupted.
DISM - Repair Windows 10 Image - Windows 10 Forums
No specific amount of time. Go click "Stop insider builds" and you will be asking to restart you PC. When after your PC is back on , go to get your insider builds again and you might be asking to restart you PC again. Then after you're back, check if you are on Fast ring. If yes, just restart you PC few more times.
Wait for few more hours, then go "Check for updates". Sometime the new build takes a day to appear.