Hi ccleanerbug:
See my 29-Jan-2025 post # 245 in anon’s CCleaner v6 in the Wilders Security Forum. ***
There have been many recent discussions in this forum about the increasing number of intrusive marketing ads bombarding CCleaner Free users, like web1’s 05-Apr-2025 Too many popups of ccleaner. If the number of pop-up ads you see is becoming intolerable and Avast / Piriform continues to ignore user complaints I’d suggest you consider moving to another third-party disk cleaner (or just use the built-in cleanup tools that come with your Windows OS and browser) instead of decreasing your system security by unblocking CCleaner-related excutables and/or IP addresses in your firewall.
*** NOTE: I still have a copy of CCleaner Free Portable v6.x on a removable USB stick but these days it’s only used for comparative testing (e.g., if I want to compare the effectiveness of CCleaner vs another disk cleaning tool).
According to the feature list at https://www.bitdefender.com/en-us/consumer/free-antivirus your Bitdefender Antivirus Free does not include Bitdefender Firewall. I use the Windows Firewall built in to my Windows 10 OS and AFAIK that firewall does not block any CCleaner-related excutables and/or IP addresses by default.
Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.5854 * Firefox v139.0.4 * Microsoft Defender v4.18.25040.2-1.1.25040.1 * Malwarebytes Premium v5.3.2.195-134.1.5283 * Macrium Reflect Free v8.0.7783 * CCleaner Free Portable 6.36.11508 * HDCleaner Portable 64-Bit v2.091