Fix Adobe Acrobat Freezing When Sending a PDF via Outlook 365
Question details
Adobe Acrobat stops responding or freezes when trying to send a PDF document as an email attachment.
- Product
- Adobe Acrobat / Microsoft Outlook
- Device & OS
- Windows 10
- Scenario
- Attempting to share a PDF document directly from Adobe Acrobat using Microsoft Outlook 365 as the email client.
- Observed behavior
- Acrobat stops responding, the email fails to open, and the Windows Event log displays a COM Server Local Activation permission error.
Before attempting to fix Adobe Acrobat, open Outlook 365 separately and send a test email with an attachment to confirm that your mail client is functioning correctly.
Set Outlook as the Default Mail Client and Repair Installations
Ensuring that Windows properly recognizes Outlook 365 as your default email app often resolves conflicts between Adobe Acrobat and Microsoft services.
Acrobat relies on Windows default application settings to launch Outlook. If the registry or default app settings are corrupted, Acrobat will freeze waiting for a response from the DCOM server.
Go to Windows Settings > Apps > Default apps. Under 'Email', click the current application and select Outlook from the list to force Windows to register it as the default.
Open Adobe Acrobat, navigate to Edit > Preferences > Email Accounts. Select your Outlook account and click the 'Make Default' button. If Outlook is not listed, add it.
In Adobe Acrobat, go to the Help menu and select 'Repair Installation'. Allow the process to complete and restart your computer.
Update Adobe Acrobat and Microsoft 365
Running outdated versions of either application can cause compatibility issues and COM Local Activation errors.
Save and Attach Manually
If Acrobat continues to freeze, bypassing the in-app email button is the most reliable workaround.
Avoid Acrobat and Outlook Errors with WPS Office
If integration errors between Adobe Acrobat and Microsoft Office keep disrupting your workflow, consider switching to WPS Office. It provides a lightweight, unified suite with a built-in PDF editor that allows you to manage and email PDFs seamlessly without heavy background services.
- 1. Install WPS Office: Download and install WPS Office to handle your PDF, Word, Excel, and PowerPoint files in one lightweight application.
- 2. Open Your PDF: Launch WPS Office and open your PDF document using the dedicated PDF tab.
- 3. Share via Email: Click the 'Menu' button, select 'Share', and choose 'Email' to quickly attach and send the document without freezing.
Frequently Asked Questions
Why does Acrobat throw a COM Server Local Activation error?
This error occurs when Adobe Acrobat lacks the correct Windows DCOM permissions to trigger Microsoft Outlook's local background services, resulting in a communication failure between the two applications.
How do I change the default email client inside Adobe Reader?
Go to Edit > Preferences > Email Accounts in Adobe Acrobat or Reader, select your preferred email client from the list, and click the 'Make Default' button.
Should I manually fix the DCOM permission error in Windows?
It is highly recommended not to alter DCOM permissions via 'dcomcnfg' or the Registry unless explicitly directed by an IT administrator, as incorrect changes can disrupt other core Windows services.
Does reinstalling Adobe Acrobat fix the Outlook freezing issue?
Often, using the 'Repair Installation' option under the Help menu in Acrobat is sufficient. However, if registry keys are badly corrupted, a clean uninstallation and reinstallation of Acrobat may be required to restore proper email integration.
