Malware scan stucks
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Hello,
I use the free version of Defender on 2 websites.
On one everything works fine. But on the other website which is a bit bigger, the Malware scan does not work. The progress bar is stuck. When interrupting, there is a message with “Error during scanning” and at the beginning of the progress bar is the word “undefined%”.
When I take an exact copy (with Duplicator) of this website and place it on another localhost environment, then the malware scan works correctly.
I use Windows IIS environments. But I guess this can’t be the reason.Thanks in advance for any help or hints.
Kind regards.
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Hi Adam,
Indeed, the copied website is a totally identical version of the original one.
I have not changed anything. It also works on a similar Windows IIS platform. The original why the scan does not work, however, is a Windows Server with IIS web server and the local one is a Windows 10 Professional also with IIS web server with the same settings.
No cache plugins or similar cache settings are used.
On another website, but a smaller one, also on the same Windows IIS server, the malware scan works without any problems.
However, I cannot adjust those settings of malware scan where it gives problems, because I only get a window with the texts:
“Scan your website for file changes, vulnerabilities and injected code and get notified about anything suspicious. Defender will keep an eye on your code without you having to worry. RUN SCAN”
And can you suggest me how I can see errors during scan in the browser console?
I have tried in Google Chrome with the tools for developers, but I can’t see any errors in that console window.
Any other suggestions?
Best regards,
AlainHi,
As mentioned at the beginning, I use WordPress for websites on Windows web servers. After a long search on the Internet, it became clear that there are sometimes problems with the WordPress built-in Cron Jobs handling on Windows OS. Defender Malware Scan does indeed use the Cron Job routine.
On Windows web servers this Cron Job system can be started via the well known Windows scheduled tasks. It is rather complicated to explain all this here how to set this up.
I found a fitting Youtube video in which everything is clearly explained. Before it worked properly for me, I set the Windows task as a scheduled neutral task and not as in the video as a scheduled task after logging in. See the Youtube video at:
Setting up WordPress Cron as a Windows Scheduled Task
Of course, the following instruction “define(‘DISABLE_WP_CRON’, true);” should also be placed in the wp-config.php file. This will disable the default WordPress Cron Job routine. This is now taken over by the Windows OS.
Now everything works perfectly as it should.
A special thank to the Defender support team, but…
I searched more for a specific Windows cause and found this working alternative solution.
Kind Regards.
Alain
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