When I install 5.65 Ccleaner does not open
What antivirus do you use? What windows version?
I have same problem....just won't run after it seems to install successfully. Win 10 Trendnet AV...was working fine prior to last week
1 hour ago, DavidY said:<div class="ipsQuote_contents ipsClearfix" data-gramm="false"> <p> I have same problem....just won't run after it seems to install successfully. Win 10 Trendnet AV...was working fine prior to last week </p> </div>
Do you mean trend micro AV? I couldn't find trendnet on a cursory web search. If yes Trend micro users have found that one of two things fixes this issue
First make sure you are running trend micro 2020 (update within the program won't do this update). It's available at https://esupport.trendmicro.com/en-us/home/pages/technical-support/maximum-security/home.aspx
Second if that doesn't fix the issue or you are already on 2020
Add ccleaner as a whitelisted program as described in
I have the same problem. After the update to v5.65, ccleaner could not be opened anymore. I also tried the Portable version.
Since I had to reinstall my PC anyway because of problems, I didn't care.
After the reinstallation, however, the same problem again.
After reading here that it might have something to do with the virus scanner, I tried it right away. If Trend Micro is completely closed, ccleaner v 5.65 can be opened, otherwise not (also Portable!). ccleaner v5.64 works without any problems!
Win10 pro 10.0.18363
Trend Micro Maximum Security v16.0
... Update
OK, who can read is clearly in advantage...
After I have included ccleaner in the whitelist of the TMMS it works again.
Funnily enough, I've never raised problems with ccleaner and TrendMicro and I've been using both forever...<span class="ipsEmoji">?</span>
Re:
Quote<div class="ipsQuote_contents"> <p> Funnily enough, I've never raised problems with ccleaner and TrendMicro and I've been using both forever </p> </div>
Me too; I have been using both TrendMicro Maximum Security and CCleaner for years, but after the update sometime in March 2020, (in V 16.0 anyway), that is ... ...Something changed somewhere. I don't know where the change occurred, but the white-listing in Trend, did solve the problem.
Trend are aware and are looking at it:
https://community.ccleaner.com/topic/57689-update-failure/page/3/?tab=comments#comment-318143