Deadlock Detected Scanning

RE: Deadlock Detected Scanning

WRD — Wed, 30 Sep 2020 20:07:30 GMT

Hello;

We are experiencing this as well but we do not run any Citrix applications or server. Why would this be affecting us?

Thank you.

Wendy

RE: Deadlock Detected Scanning

Teri Grinnell — Fri, 25 Sep 2020 15:59:19 GMT

Hi Yashraj,

I'm having the same issue. Can you assist? Thanks!

Teri

RE: Deadlock Detected Scanning

richbsec — Thu, 10 Sep 2020 17:25:52 GMT

Thanks Mel. I read that solution as that it came from Citrix NOT Sophos and it it is turning off functionality of Sophos that it is a workaround until Sophos can fix what is causing the issue.

RE: Deadlock Detected Scanning

Mel Lawrence — Thu, 10 Sep 2020 07:40:50 GMT

Hi richbsec,

Unfortunately this didn't work for us in the end, we had to apply the suggested reg key to disable asynchronous scanning. After applying the exclusion, look out for Sophos not being able to update, or apply the policy in time for session use. On the Sophos Console I saw "Awaiting Policy Transfer" errors across all Virtual Desktop servers, it was taking over 3 hours for the policy to apply and even then would still pick out random files to deadlock, some dlls for an application, Adobe Reader.exe. Really random experience!

I hope the exclusion works for you, but if not the Sophos suggested reg key workaround has definitely resolved our issues. The reg key suggestion is higher up in this thread.

Mel.

RE: Deadlock Detected Scanning

richbsec — Thu, 10 Sep 2020 02:12:05 GMT

We are also experiencing a049001e Deadlock detected while asynchronously scanning file "C:\Users\...\ntuser.ini" on Citrix servers. We are going to add a file scanning exclusion for ntuser.ini for the interim until Sophos addresses the problem that occurred after their software update.

RE: Deadlock Detected Scanning

Mel Lawrence — Fri, 28 Aug 2020 15:11:06 GMT

We have updated the exclusions on the Sophos policy to bypass ntuser.ini - this was the file that was deadlocked. After conferring with the rest of my Team, it didn't seem suitable to rollout the suggested reg fix.

So far so good, logins seem to have returned to normal for us for now but I'll be keeping a watchful eye on the Sophos console. It would be good to know what happened to cause this issue, I can see from around 4pm on 19/08 it started.

RE: Deadlock Detected Scanning

Yashraj S — Fri, 28 Aug 2020 14:31:57 GMT

Hi Mel Lawrence

We're aware of this and this is actively being investigated by our development team. We will definitely update this thread once there is a fix available.

RE: Deadlock Detected Scanning

Mel Lawrence — Fri, 28 Aug 2020 07:52:13 GMT

Following this thread as we started to notice this in our environment on Thursday 20/08 from around 6am too, most noticeable in our Citrix environment, it’s slowing logins at the interactive session hand off. Logins have gone from 60 seconds to anything up to 10 minutes. WS2016 (1607) Citrix Virtual Desktop and Apps 7.15LTSR CU3.

I’ll try the suggested fix but please can you inform me when there is an official fix..

Thanks,

Mel.

RE: Deadlock Detected Scanning

Shweta — Thu, 27 Aug 2020 07:56:56 GMT

Hi Evan Prohaska

Our team is currently investigating this issue, we will update the information once available. I would suggest you implement the workaround as mentioned in this thread and see if it fixes the issue.

RE: Deadlock Detected Scanning

Evan Prohaska — Wed, 26 Aug 2020 20:13:19 GMT

Since Sophos is not fixing the issue we came across a fix for the last time this happened to Citrix when Sophos deployed an update that caused this issue.

Symptoms or Error

While login or launching a ICA session , UPM profile takes long time to login due Sophos Anti Virus

Solution

Created registry change to disable asynchronous Scanning for Sophos Anti Virus:
Instructions:
Under:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\SavService\Application
Create a new REG_DWORD called: DisableAsyncScans with a value of: 1

RE: Deadlock Detected Scanning

Steve McGinnis — Mon, 24 Aug 2020 09:24:38 GMT

We are having the same issue with error code a049001e I have logged a call - 03052187 any chance you could help us out as well.

RE: Deadlock Detected Scanning

its-sys RGU — Sun, 23 Aug 2020 13:50:30 GMT

We are seeing the same problem as well, deadlocked files in the user profile which is killing Citrix UPM. I have PM'd our case number for assistance. So far, the support engineers we are dealing seem unaware of this.

Thanks.

RE: Deadlock Detected Scanning

Uwe M — Fri, 21 Aug 2020 14:46:05 GMT

The same problem. Why just PM?

RE: Deadlock Detected Scanning

Shweta — Fri, 21 Aug 2020 09:57:25 GMT

Hi Michael Sanders

I have sent you the steps via PM, could you please try and check if that helps?

RE: Deadlock Detected Scanning

Michael Sanders — Mon, 17 Aug 2020 11:34:44 GMT

Hey Shweta, I'm having the same issue on several PC.

RE: Deadlock Detected Scanning

Adam Yarborough — Fri, 14 Aug 2020 18:49:59 GMT

Also have the DisableAsyncScans registry fix (https://support.citrix.com/article/CTX241246), which just changed the errors and continued to have some issues.

On the affected server, open registry editor and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\SavService\Application
Create a new REG_DWORD called: DisableAsyncScans with a value of: 1

Hopefully endpoint client will be updated soon to address.

RE: Deadlock Detected Scanning

Patrick Laroche — Fri, 14 Aug 2020 16:01:15 GMT

Same issue here on 78 workstations.

RE: Deadlock Detected Scanning

Adam Yarborough — Thu, 13 Aug 2020 12:40:11 GMT

PM Sent with case number as well.

RE: Deadlock Detected Scanning

Markus Ortner — Wed, 12 Aug 2020 15:49:51 GMT

Hi Shwata,
Yes I did : [#10048550] Web support query
Thank you :-)

RE: Deadlock Detected Scanning

Shweta — Wed, 12 Aug 2020 10:16:22 GMT

Hi Markus Ortner and ArmandoFernandez

Would you please confirm if you have already registered a support case for this issue? If so, please PM me the case number.

RE: Deadlock Detected Scanning

Markus Ortner — Wed, 12 Aug 2020 05:09:18 GMT

Hi Yashraj,

I don‘t have any Citrix on our machines.

we have Hyper V cluster, Wn Server 2019 and Win 10 Pro Machines affecting this case.

Thank you in advance

Kind Regards

Markus

RE: Deadlock Detected Scanning

ArmandoFernandez — Tue, 11 Aug 2020 21:43:25 GMT

Yashraj,

I have this problem too on a number of endpoints. I do not have citrix installed.

An update failed on just under a hundred endpoints last week. The failed update installed without an uninstaller to remove Sophos. I am currently using the zap tool to remove then re-install sophos. The ' a049001e 'Deadlock detected while asynchronously scanning file' error is happening after trying to reinstall.

RE: Deadlock Detected Scanning

Brad Whelchel — Tue, 11 Aug 2020 14:31:18 GMT

Hi Yashraj,

I‘ve the same Problem, like Anthony Stevens:

..... Endpoint Console with an error code a049001e saying 'Deadlock detected while asynchronously scanning....

Thanks,

Brad

RE: Deadlock Detected Scanning

Yashraj S — Tue, 11 Aug 2020 12:10:43 GMT

Hi Markus,

Can you please confirm if you're running anything Citrix related on your machine?

RE: Deadlock Detected Scanning

Markus Ortner — Mon, 10 Aug 2020 19:59:01 GMT

Hi Yashraj,

I‘ve the same Problem, like Anthony Stevens:

..... Endpoint Console with an error code a049001e saying 'Deadlock detected while asynchronously scanning....

Maybe you can help me as well ?

Thank you in advance

Kind Regards

Markus