KB4835

[Bubblebop]

Craziest thing I have experienced, we figured this out randomly yesterday.

Colleague had moved 1 TB of data but then in the backup report saw only a few MB and a Success message...

0 notifications from veeam, i had to manually find kb4835.

I have notification for kb4869 yesterday and KB4821 in february.

Hope this fix is not Soon™, does the managers know?

I made a forum account just to post this

[Polina]

Hi Bubble Bop,

Could you please elaborate which data have you moved, how and where? Cause it's not entirely clear atm how it is related to the issue from KB4835.

We have sent email notifications on KB4835 to all customers quite a while ago. If you didn't receive it, we can check if the issue is on our side so that it never happened again.

Thanks!

[Bubblebop]

Hi,

My colleague transferred from the customer's on-prem SMB to SharePoint.

He tested if the new sites were actually being backed up.

We hadn't updated 8.4 before that job , and veeam365 now thinks we have all the data.

As for the email notification, this is a 'me-too', since I see others in the thread complaining about the same thing.

[Bubblebop]

I know there are a lot of smart people at Veeam, smarter than me. I've used and sold it since Veeam Backup 2.0.

I think we can tackle this the same way as Crypto Virus; the files have a signature "Sorry, something went wrong", HTML content in non-HTML files is easy to identify and fix.

Then you can scan all new files created in 2026 to reassure everyone.

My own OneDrive files are also corrupted, including the veeam365-usage report over several months.

[Polina]

I'm afraid verification is a bit more complex than that, not to mention fixing the corrupted data.

[Polina]

@Bubblebop

A quickly checked if any contacts from your company were among the recepients of our email communication on KB4835, and found that Case Admin of your account should received our email from April 8th. Other accounts that we used to have on the mailing list unsubscribed from our communications before these communications were sent. If needed, I can share with you emails in DM to verify if those are the correct ones.

I'm sorry for this inconvence and suggest you subscribe to notifications on our KB updates.

[Bubblebop]

Yes, please share in DM

[Bubblebop]

Thanks. Both addresses received the email notice on April 8, and version 8.4 became available on April 27.

The first address doesn’t have the technical ability to notify the rest of us, since it belongs to a license seller. The second address, however, should have been able to act on the notification.

My own address did receive the other notifications, though, and I have not unsubscribed from anything.

Is subscribing to “Get weekly article updates” on the KB the correct way to receive all important updates like this, or is there another recommended notification channel? If possible, could you clarify this for me and for others who may have the same question?

Hope you guys are making progress with the fix