Hello,
The last update of CCleaner prevents Office 2019 to run… I had to re-install Office and desinstall CCleaner.
Is anybody aware of this bug? Do you know how to fix it?
Thanks !
Marie
There have been no other reports of that happening with the latest CCleaner v6.36.
However it does sound like something that happened a few years ago to users who also had certain AntiVirus programmes installed.
It was due to a bug in those particular AV’s - and happened if you ran any cleaner not just CCleaner.
Do you have an AV other than the built in Windows Security?
If so then what is it? (and what version is it?).
Also which Windows version are you running?
Thanks for your answer.
I’m running Windows 10. And I have MacAffee LiveSafe (1.30.150) and Malwarebytes (5.3.1.188) running.
The problem stopped yesterday at once after I uninstalled CCleaner… I called Microsoft and they confirmed that some antiviruses or software like CCleaner can cause problems when launching Office 2019…
I don’t know what to do now since I don’t question at all the efficiency of CCleaner. Thing is I don’t want to repair Office each time!!!
Thanks for that info.
That is a typical reply from Microsoft support. Yes it may be true, and that gives them a handy excuse not to do anything.
You shouldn’t normally run 2 AV’s at once, but Malwarebytes can be an exception to that because it works differently to a traditional AV.
However, have you set the exclusions to let McAfee and Malwarebytes run together without potential conflict?
https://forums.malwarebytes.com/topic/292071-malwarebytes-and-mcafee/#comment-1541920
I don’t see that causing the problem you describe with Office not running though.
Let’s see if we can work out what may have happened.
Could you explain a bit more about what you did, and what you saw, when you tried to launch Office but it wouldn’t run?
Did you get any error message(s)?
What makes you believe that it was CCleaner that caused the issue?
In CCleaner itself:
Had you run the Registry Cleaning tool?
Had you run the Duplicate Finder and deleted some System Files?
(Either of those could remove needed files if not done carefully/properly).
Had you used the Software Updater to update Office?
Had you used the Software Updater to update Windows?
Had you used the Driver Updater to update anything?
You may not want to do this, fair enough if you don’t want to then please don’t.
It would however confirm or rule out if CCleaner was/is the cause.
If your reinstalled Office is working OK now then what happens if you reinstall CCleaner and run just Health Check, will office still open afterwards?
If that’s OK the what about just a Custom Clean?
No, I didn’t set exclusions but I haven’t had any problem until now. Malwarebytes is much more powerful than MacAfee in certain cases, that’s why I installed it.
Concerning the problem with Office, here’s what happened on the 9th June: I double-clicked on the Word icon as usual and… nothing happened. No message error, just nothing. Same with Excel or PowerPoint. I tried to open a document directly, same thing, nothing happened. I checked in the Configuration panel looking for a recent Office update. There was one, on the 3d of June and I have used Word since then, so it couldn’t be this. The last update was CCleaner, on the 9th June. I first tried to repair Office, using the quick repair. One it was finished, I double clicked on the Word icon. Nothing. I used the longer repair function, still nothing (and here I really started to panick… I’m a freelancer and I really need Office for my job). Then, I applied my last solution: uninstall the last installed software and it was CCleaner. And I re-launched Word: it worked at once… It couldn’t be clearer.
I hadn’t run the Registry Cleaning tool, nor the Duplicate Finder. I just had run a “normal” cleaning in the morning + an update of one driver (the bluetooth) + another update (NetSecurity).
I hadn’t used the Software Updater for Office or Windows.
For the moment, I haven’t reinstalled CCleaner as I lost already one afternoon trying to solve this problem…
So simply uninstalling CCleaner was enough to allow Office to be launched again.
That is telling and I think I know what the problem was.
I think that you had run the Performance Optimizer in CCleaner and (maybe inadvertently/unknowingly) put Office into to sleep mode.
Once an app is in that mode it should 'wake up again on demand, however…
We have had a few people say that once they did that with Office then their Office would not wake up again when launched.
(It seems to be different for different Office versions, and different computers).
The usual solution if they still wanted to use PO on apps other than Office was to manually go back into PO and ‘Wake Up’ Office manually (and not put it back into sleep mode again).
Or they could ‘Wake Up’ everything and ignore PO from then on.
Hi,
Just to let you know : I reinstalled CCleaner and for the moment, everything is working 
Thanks a lot for your help: the sleep mode may be an explanation, although I’m pretty sure I didn’t run it this time… But as I still don’t understand what happened, let’s say that it was the explanation!