It happened to me last night. I ran both Dism command lines below: Dism.exe /online /Cleanup-Image /checkhealth Dism.exe /online /Cleanup-Image /restorehealth
and rebooted. I ran sfc /scannow again after that and it came out OK this time around.
I did all of that and sfc still stuck at 34% but that was in previous build too.
Computer Type: Laptop System Manufacturer/Model Number: HP - Pavilion Notebook 15-cc076sa OS: Windows 10 Home 64bit 21H1 and insider builds CPU: Intel Core i7 7500U @ 2.70GHz Motherboard: HP Memory: 8GB DDR4 Graphics Card: NVIDIA GeForce 940MX (HP) Monitor(s) Displays: Built in Screen Resolution: 1920x1080 Mouse: Logitec M705 Hard Drives: 238GB SAMSUNG MZNLN256HMHQ-000H1 (SSD)
3725GB Western Digital WD Elements 107C USB Device (USB (SATA))
2794GB Western Digital WD Elements 107C USB Device (USB (SATA))
1397GB SAMSUNG HD154UI USB Device (USB (SATA)) Internet Speed: 200 Mb/sec Browser: Chrome,FF,Opera Antivirus: Defender, Malwarebytes
Computer Type: PC/Desktop System Manufacturer/Model Number: home built OS: Windows 10 (Pro and Insider Pro) CPU: Intel i3-10100 Motherboard: ASUS Prime B460M Memory: 16 GB, Crucial Graphics Card: Intel on chip Sound Card: Realtek onboard Monitor(s) Displays: Dual ASUS+LG Screen Resolution: 1920 x 1080 x 2 Keyboard: Cherry, same for the last 20 years Mouse: Logitech M500 PSU: No name, 80 plus, 500 W Case: Mini Tower Cooling: Silent Hard Drives: Kingston A2000 NVMe, 500 GB Internet Speed: 100/20 Browser: FF, Edge, Vivaldi Antivirus: WD + MBAE, SpywareBlaster, hosts file Other Info: Eaton UPS
ASUS Vivobook Flip 14, Ryzen 7 4700U, 512 SSD NVMe, 8 GB DDr4
Computer Type: PC/Desktop System Manufacturer/Model Number: home built / frankenstein Junior OS: Windows Insider, Fast ring CPU: AMD FX6300 Motherboard: gigabyte 970A UD3 Memory: 8 GB Corsair DDR3 Graphics Card: nvidia GT710 Sound Card: Realtek on board Monitor(s) Displays: same as 1st Screen Resolution: 1680 x 1050 Keyboard: Cherry Mouse: Logitech PSU: Tecnoware 520W Case: Ugly one Cooling: 2 x 120 mm Hard Drives: Crucial BX100 240 GB, I TB spinner Seagate Internet Speed: 100/20 Browser: FF, Edge, Vivaldi Antivirus: Windows Defender, Protected folders on, PUA on
UPDATE 9/6: New Windows 10 Insider Preview Fast+Skip Build 18975 (20H1) - Sept. 6
Hey #WindowsInsiders, we have released the ISOs for 20H1 Build 18970 and 19H2 Build 18363.327 today. Please note: Build 18363 is incorrectly labeled as "Slow" -...
UPDATE 5/29: New Windows 10 Insider Preview Fast+Skip Build 18908 (20H1) - May 29
Source: Announcing Windows 10 Insider Preview Build 18898 | Windows Experience Blog
See also: KB4497165 Intel microcode updates for Windows 10 Insider...