I tried a System Restore today on Windows Technical Preview. Once the operation completed it gave me the following message: –
“System Restore did not complete successfully. Your computer’s system files and settings were not changed.
Details: An unspecified error occurred during System Restore. (0x800700b7).”
The system restarted and it gave me this message:
“System Restore completed successfully. The system has been restored to 07-10-2014…..”
I couldn’t find the undo System Restore option.