A AdamW Member Joined Oct 25, 2013 Posts 17 Location Poland Jul 14, 2014 #1 Hello. I wonder if you can help me. I keep getting error 0x800f0906 when running DISM /Online /Cleanup-Image /RestoreHealth. DISM /Online /Cleanup-Image /RestoreHealth Deployment Image Servicing and Management tool Version: 6.2.9200.16384 Image Version: 6.2.9200.16384 [==========================100.0%==========================] Error: 0x800f0906 The source files could not be downloaded. Use the "source" option to specify the location of the files that are required to restore the feature. For more information, review the log file. The DISM log file can be found at C:\Windows\Logs\DISM\dism.log ********************* relevant bits from it seem to be: Checking System Update Readiness. (p) CSI Payload Corrupt amd64_microsoft-windows-windowsupdateclient-ui_31bf3856ad364e35_7.8.9200.16927_none_28265fa316d944b7\wuaext.dll Repair failed: Missing replacement payload. (p) CSI Payload Corrupt amd64_microsoft-windows-windowsupdateclient-ui_31bf3856ad364e35_7.8.9200.16927_none_28265fa316d944b7\wushareduxresources.dll Repair failed: Missing replacement payload. Summary: Operation: Detect and Repair Operation result: 0x800f0906 Last Successful Step: Entire operation completes. Total Detected Corruption: 2 CBS Manifest Corruption: 0 CBS Metadata Corruption: 0 CSI Manifest Corruption: 0 CSI Metadata Corruption: 0 CSI Payload Corruption: 2 Total Repaired Corruption: 0 CBS Manifest Repaired: 0 CSI Manifest Repaired: 0 CSI Payload Repaired: 0 CSI Store Metadata refreshed: True In adition, my windows 8 will not carry out a scheduled maintenance session. Is this something I can repair, do you think? Any help would be appreciated. The setup event logs mentions 2 errors, so presumably this is the issue.