PDF file corrupt after drop and drag in Outlook

David Seikis 1 Reputation point

Hello everyone,

Recently one of our customers notices a strange behavior of Outlook (Microsoft Office Standard 2016).

Our client uses 3 Citrix RDS servers w2016 datacenter in combination with FSlogix.
The problem occurs after dragging and dropping a PDF file from other mail into a concept mail (new e-mail)

At the end of the day, they send like 50+ e-mails with 5 or more attachments (most are PDF files) with this method. But some PDF files get corrupted and the file is 4 Kb (not always).
I am not able to reproduce the problem and I can not find any error in de event logs with the cause. CPU, RAM, and space are not an issue.

Repairing or reinstalling office dit nog solve the issue.

I am wondering if anyone can help me to solve this issue.

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. JeffYang-MSFT 6,166 Reputation points

    Hi @David Seikis ,
    Is this a problem that has only recently occurred on all of these three machines? Can everything work fine before? If so, please check what specific operations users did before this problem occurred.

    The problem occurs after dragging and dropping a PDF file from other mail into a concept mail (new e-mail)

    Does this issue only occur to the specific format(.pdf) files? Can this issue be reproduced if users drag and drop other files such as .doc and .xls from other mail into a concept mail?
    Also, what if users drag and drop pdf files from desktop into a new e-mail?

    I also tested a lot in my Outlook (Microsoft Office Standard 2016 16.0.4266.1001) but could not reproduce this issue as well. Since you have already tried repairing or reinstalling Office, it should be able to exclude most factors which related to Outlook client. There could be some add-ins in your Outlook client that might cause this issue, so it is suggested to start your Outlook in safe mode (Press Win + R, type “outlook /safe”, press Enter.) and see if the issue has any difference.

    Besides, corrupted registry keys may also lead Outlook issues. Please try the steps below to remove your Outlook registry completely and see if it works:

    1. Exit Outlook and open the Registry Editor
    2. Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0
    3. Right-click the Outlook folder
    4. Rename it as Outlook1
    5. Restart your Outlook and add your email account to test
      (Note: Serious problems can occur if you modify the registry incorrectly. Before making changes, back up the registry to restore it in case something goes wrong.)

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