New Participant

Answered

Can only open 1 PDF at a time from DFS server

Forum|Forum|6 years ago
August 6, 2019
16 replies
30685 views

Hi all,

I recently moved files over to a server which is using DFS and can only open one PDF at a time unless I turn off Sandbox Protection. This is happening to everyone and I've narrowed it down to be an issue with Adobe Reader and DFS. That being said:

Is Sandbox Protection worth having on?

Has anyone else had this issue and were you able to resolve it?

Thanks

This topic has been closed for replies.

Correct answer GGbce

Just upgraded to version: 2021.001.20135 and the issue seems to be resolved !

Can you try?

Maybe a regression bug caused it to re-appear?

Like I told in august 2020, this issue was fiex since version 20.012.20041. I upgraded many time through 20.013.20074 than this latest version in 2021 and still working fine !

Someone could edit the initial post to say "RESOLVED".

Show previous replies

A

amazing_Mist50B7

New Participant

This is pretty sad. I can find 6 year old threads about issues with DFS shares and there's still no fix from Adobe. It's clearly an issue with DFS. If I map the same path with the servername, I can open PDFs by double-clicking just fine. So I'm left with either turning protected mode off, telling users to drag & drop additional PDFs or just uninstalling Reader and having them use Chrome as a PDF viewer.

T

tarutuhoxi

New Participant

This problem still exists in 2019.021.20056

A

atops31128314

New Participant

Hi stever,

I have exactly the same problem, did you managed to solve that issue?

I'm running Acrobat Reader version 19.012.20040 on Windows 10 1903.

ls_rbls

Community Expert

Hi,

I am going to post here the same info that I shared in a similar thread.

After much reading, I thinks the following references might be useful.

It seems like the DFS is preventing access to the namespace when a client tries to hit a folder target with Acrobat in protected mode .

Verify if when you add the absolute path for a priviledged location ,

that the namespace is not configured to issue referrals with the "insite" option.

See here for troubleshooting: https://support.microsoft.com/en-us/help/975440/how-to-troubleshoot-distributed-file-system-namespace-access-failures

Enable the cross domain troubleshooting log in Reader / Acrobat and confirm if the messages that you get are not suggesting to "allow any" type of access which is the least restricted access policy, which would also defeat the purpose of using Enhanced Security and Protected Mode .

See here too: https://www.adobe.com/devnet-docs/acrobatetk/tools/AppSec/xdomain.html#policy-file-configuration

See here : https://helpx.adobe.com/acrobat/using/enhanced-security-setting-pdfs.html#bypass_enhanced_security_restrictions

Since this seems to be not entirely related to Adobe Reader/Acrobat, there are a few more things that need to be observed:

Review on namespacing: https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file
Review on how DFS works: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc782417(v=ws.10)?redirectedfrom=MSDN

targetting you r applications for windows: https://docs.microsoft.com/en-us/windows/win32/sysinfo/targeting-your-application-at-windows-8-1
How to configure fully qualified domains in referrals: https://support.microsoft.com/en-us/help/244380/how-to-configure-dfs-to-use-fully-qualified-domain-names-in-referrals
Configuring indicators in MS Windows Defender Advanced Threat Protection https://docs.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-atp/manage-indicators
Configuring Defender AntiVirus exclusions:https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-antivirus/configure-server-exclusions-windows-defender-antivirus#opt-out-of-automatic-exclusions
Controlled Folder Access: https://docs.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-atp/enable-controlled-folders
Turning off scaning of DFS files: https://support.microsoft.com/en-us/help/822158/virus-scanning-recommendations-for-enterprise-computers-that-are-runni
Enhanced Security: https://www.adobe.com/devnet-docs/acrobatetk/tools/AppSec/enhanced.html#trust-overrides
Trusting documents with valid certification:https://helpx.adobe.com/reader/using/protected-mode-windows.html
Bypassing protected view restrictions: https://helpx.adobe.com/acrobat/using/protected-view-feature-pdfs-windows.html
See Application Security Guide in Troubleshooting Protected View: https://helpx.adobe.com/acrobat/kb/protected-mode-troubleshooting-reader.html and see Application security libraries customization section in the Application Security Guide.
Sandboxing : https://www.adobe.com/devnet-docs/acrobatetk/tools/AppSec/index.html
Desired Access and Shared Access to enable opening of shared files using nNtCreateFile: https://docs.microsoft.com/en-us/windows/win32/api/winternl/nf-winternl-ntcreatefile
Operating system version API helper function: https://docs.microsoft.com/en-us/windows/win32/sysinfo/operating-system-version
Adding users to an encrypted file: https://docs.microsoft.com/en-us/windows/win32/fileio/adding-users-to-an-encrypted-file
See Workflow section -Actions for Shared Folders : https://www.adobe.com/devnet-docs/acrobatetk/tools/PrefRef/Windows/index.html
Creating file functions: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilea
Access based enumeration: https://docs.microsoft.com/en-us/windows-server/storage/dfs-namespaces/enable-access-based-enumeration-on-a-namespace and using inherited permissions on access bases enumeration: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd834874(v=ws.11)?redirectedfrom=MSDN

I hope these references help.

MichaelKazlow

Brainiac

Is Sandbox Protection worth having on?

It depends on how critical it is for you not to have malware on your machine. If all of your PDFs were created by your company and have been checked for malware before being placed on the server, then sandboxing is probably an unnecessary extra step.

AnandSri

Community Manager

Hi All,

We're sorry for the trouble you had, would you mind collecting the process monitor for the affected machines on which you are not able to open the multiple PDF files so that we can investigate further?

Download the Process Monitor tool Process Monitor - Windows Sysinternals | Microsoft Docs

Open and run it, reproduce the issue at your end, save the log files, and share it with us in private message only.

To send a private message, please take help from the article How Do I Send Private Message | Adobe Community

Upload the log files in Document Cloud Storage and share the link Adobe Document Cloud

Download and install the latest patch available for Acrobat and Reader and see if you still experience the issue 19.012.20036 Planned update, August 13, 2019 — Release Notes for Acrobat DC Products

Thanks for your time and patience thus far.

Regards,

Anand Sri.

IB-Rahn

New Participant

The issue still persist and with the new forum it seems like you're not able to direct message anyone anymore? I've sent you a log and you forwarded it to the engineers, is there any news from them? Also I've received some notification e-mails which said new posts were made and I could read them, yet they don't appear in this conversation, what's up with that?

IB-Rahn

New Participant

We also experience this. Everything updated and we also listed the individual servers in the Intranet Sites via GPO. But with no luck. Hope there is a fix for this soon, as turning off security features never feels good.

Amal.

Community Manager

Hi Stever,

Apologies for the trouble caused, as described above you are experiencing issues and only able to open 1 PDF at a time on DFS server with enabled security, We need some more information for a better understanding:

What is the version of the application? To check the version of the application you may please refer to the link - Identify the product and its version for Acrobat and Reader DC
What is the OS and the version?
Are you able to open multiple files locally available on your computer?
Are you getting any error message when you try to open multiple files on the server?
Could you please share a screenshot when you try to open the files on the server?

In the meantime, you may try the following steps:

Please update the application to the latest version. Go to Help > Check For Updates. To know more about the latest version available please refer to the link - DC Release Notes — Release Notes for Acrobat DC Products
You may try providing the access path to the folder on DFS server through Adobe Reader:
-Go to Edit (Windows), Adobe Reader (Mac) > Preferences > Enhanced Security > Add Folder Path >Select the appropriate folder
Go to Edit (Windows), Adobe Reader (Mac) > Preferences > General > Select open documents as new tabs in the same window and click OK and restart the application and check.

You may also refer to the help articles in the links:

-Protected View feature for PDFs (Windows), Adobe Reader
- Protected Mode troubleshooting | Adobe Reader

Let us know if that works for you

Regards,

Amal

S

steverAuthor

New Participant

Hi Amalj,

It says there are no updates and I am running this version: Adobe Acrobat Reader DC (19.012.20035)

The issue is happening on all of our Windows 10 machines. My current Windows 10 version is 1903 (OS Build 18362.239). I haven't tested it on a mac yet.

I am able to open multiple files locally on the computer. I can also open multiple files from the DFS server if they are opened through File > Open but this isn't a realistic workaround for our users. The issues happens when the file is opened through Windows Explorer.

There are no errors or messages.

I would send you a screenshot but there really isn't anything to see. When I double click the second file nothing happens.

I've also already tried what you have suggested with no luck.

Thanks for your time and I hope this info is helpful. Let me know if there are any other details I can provide.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded