Sorry - forgot to copy the group the first time:
Barry -- as I mentioned before - this is the nature of anti-virus
software. I had this exact situation happen to me with Libre Office.
Always downloaded fine. Then, one day, I had a power blip while working
in it. Libre's natural course was to back itself up and it tried
several unsuccessful writes to my disk. Malwarebytes flagged the
behavior and said -- this is a virus -- and specifically flagged it.
Once it was flagged, I could not use the program any longer. I even
de-installed Malwarebytes and still could not use the program. I tried
to re-install Libre and it still would not work.
I investigated and found out that many anti-virus programs work like
this. Once something is flagged - the only way to "undo" the flag is to
specifically go into the anti-virus software and tell it that the
program is allowed/OK. Once something is flagged - you must
specifically tell the anti-virus software that it is OK. The reason for
this is because if it did not work this way, the virus, once on your
computer, would hide itself, wait for you to unistalled or deactivate
the anti-virus and then go do it's thing. To prevent this, the
anti-virus software flags the behavior and program at the kernel level
so that EVEN if the anti-virus software is deactivated or uninstalled,
the flagged program cannot "infect" the computer.
If GNUCash was not flagged - you could just de-install AVAST and install
GNUCash. However, ONCE SPECIFICALLY FLAGGED by the anti-virus -- you
must tell the anti-virus software that GNUCash is OK/Allowed/Not a
virus.
I could be wrong in you particular situation -- but I am just trying to
demonstrate that -- yes -- you could be doing everything correct -- but
your computer still believes GNUCash is a virus and will not let you
install until you tell AVAST or DEFENDER that GNUCash is OK.
You don't have to take my word for it - but this appears to be the
situation you are caught in. If true, the only way out is to
specifically "white-list", (tell either or AVAST or Defender) that
GNUCash is OK. Until this is done, you will be spinning your wheels in
disbelief thinking it is you -- when it is the anti-virus software
getting in your way.
Ken
------ Original Message ------
From "barrym via gnucash-user" <[email protected]>
To [email protected]
Date 1/16/2026 5:54:13 AM
Subject Re: [GNC] Windows 11 security blocker
Thanks again all, I believe my last message indicated that I have tried all the
many repeated ideas suggested, I even said that I had found a method of
suspending Avast.
Could I ask a very simple question? What is the reason why GNUCash is not
(now) 'approved' for downloading and installing on W11, it was for all the
other versions I have had for years ??
Is whitelisting something that I should be aware of, to download an accounting
app?
Barry
On 14/01/2026 19:13, Adrien Monteleone wrote:
Excellent detailed instructions.
I'll add that in addition to or instead of, the www.gnucash.org URL, you might
need to specifically whitelist the SourceForge URL as that is where the
download is coming from. (and/or the github URL)
Regards,
Adrien
On 1/14/26 10:32 AM, Ken Pyzik wrote:
2. If AVAST Web Shield is blocking the download, this could be another cause.
Add a temporary exception. Open Avast. Go to Menu → Settings → Exceptions.
Add this URL: Code https://www.gnucash.org. Retry the download. Once
downloaded, you can remove the exception if you want to.
AVAST sometimes flags open‑source installers because they aren’t signed with
expensive commercial certificates, not because they’re unsafe.
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