krzemien Active member Joined Mar 11, 2018 Posts 38 Jun 19, 2020 #1 As per the subject line: entirely out of the blue and since last weekend Reliability Monitor on my Windows 10 Home 1909 up-to-date PC suddenly started showing blank history. There are only critical events shown, and stability index also does continue to work correctly. What's missing are 'informational events' and 'warnings' - past and current. See the screenshot below: The expected view would be something like this, obviously: Apart from that PC works absolutely fine, SFC and DISM both yield no disconcerting results. I do use CCleaner but I specifically do not clean any Windows logs. Event Viewer remains unscathed either. I literally have no idea what might have triggered it - the only thing that has occurred was me playing with rather dated software & trying to run it in Windows 7 compatibility mode that has triggered few failures on 12/06. But I'm not sure about the connection here. I did raise it on Ten Forums here but got inevitable 'clean install' nonsensical advice: Reliability Monitor is blank - Windows 10 Help Forums So wonder if anybody here has any creative idea how to troubleshoot it? Does anybody know where this data is kept or retrieved from to start with? I think it used to be in C:\ProgramData\Microsoft\RAC in previous versions of Windows, but I do not believe that's the case here. Any ideas as to address this rather trifling and annoying issue will be most appreciated.