Firewall issue with NAS

MarylinC · 2025-07-07T05:49:49+00:00

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I am having problems using commands like copy and paste in Windows 11 File Explorer when trying to copy large files between my PC and my NAS.

I can navigate around and see all the files on my NAS from within file explorer and I can also open up files.

However, when I try to copy and paste files in either direction between my PC and my NAS file explorer hangs and won't perform the task. Also if I right click on a file the menu takes over a minute to appear.

After trying various possible ways to fix the problem I have found that by turning off the Bitdefender Firewall the problem goes away and everything works normally.

Can someone tell me how to properly set up an exception that will prevent the firewall interfering so I don't need to keep turning off the firewall.

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Comments

Gjoksi

Hello.

On the same issue check out these comments:

https://community.bitdefender.com/en/discussion/comment/336141#Comment_336141

https://community.bitdefender.com/en/discussion/comment/336170#Comment_336170

If that didn't help, your best option is to contact Bitdefender Consumer Support by chat, telephone or e-mail:

https://www.bitdefender.com/consumer/support/help/

Chat is the fastest way to get in touch with Bitdefender Consumer Support.

NOTE: Bitdefender telephone support is not toll-free!

Regards.

Alexandru_BD

@MarylinC any feedback here, did the instructions help / didn't work? Thanks!

MarylinC

Hi.

Sorry for not getting back to you sooner.

In the end I never had to do a thing. I have no idea what was causing the problem but I left it for a few days and it somehow fixed itself and is working again normally now. I have only recently upgraded this PC from Win10 to Win11 and I suspect the problem was most likely due to a faulty Windows update that has now been fixed.

Thank you for your replies.