Windows insider update failing

1. Basic Troubleshooting Steps 
Check network connection: 
 Make sure the network is stable (wired connection is recommended) 
 Disable VPN/proxy software 
 Try switching DNS to 8.8.8.8/4.4.4.4 
2. Free up storage space: 
Clean up temporary files (Settings > System > Storage) 
Run disk cleanup utility (search for "Disk Cleanup") 
3. Repair Common Errors 
 Error 0x80070020 
Administrator CMD run: 
cmd 
net stop wuauserv 
net stop cryptSvc 
net stop bits 
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old 
net start wuauserv 
net start cryptSvc 
net start bits 
▸ Error 0x80240034 
4. Reset Windows Update components: 
cmd 
sfc /scannow 
dism /online /cleanup-image /restorehealth 
5. Advanced Solution 
Clear the update cache: 
Stop the Windows Update service 
Delete the contents of the following folders: 
C:\Windows\SoftwareDistribution 
C:\Windows\System32\catroot2 
6. Repair the system image: 
cmd 
dism /online /cleanup- image /startcomponentcleanup 
7. The ultimate solution 
Create installation media using Media Creation Tool 
Select "Upgrade this computer" to keep the files and reinstall.