How to Fix Outlook Freezing and Adobe Acrobat DC Subscription Errors
Question details
Users experience Outlook freezing and Adobe Acrobat DC subscription verification errors after installing Acrobat alongside Office 2010.

- Product
- Microsoft Outlook 2010, Adobe Acrobat DC
- Device & OS
- Windows 7
- Scenario
- Using Microsoft Outlook while Adobe Acrobat DC is installed on the same system.
- Observed behavior
- Outlook intermittently stops responding, and Acrobat displays a 'cannot verify your subscription' error message, often linked to offline mode.
Ensure that your computer has an active internet connection to communicate with Adobe's activation servers, and save any draft emails before restarting Outlook.
Troubleshoot Adobe Acrobat Subscription Verification
Resolve the 'cannot verify subscription' error by checking offline activation status and resetting your sign-in session.
Adobe Acrobat requires periodic connection to its licensing servers. If it was installed offline or network access is blocked, it will fail to verify your active subscription.
Open Adobe Acrobat DC, navigate to the Help menu at the top, and click on 'Sign Out'. If prompted, confirm your choice.
Restart Acrobat DC and click 'Sign In' from the Help menu. Enter your Adobe ID credentials to force the software to ping the licensing servers.
If the computer remains offline, follow Adobe's official offline activation steps to generate a response code using an internet-connected device.

Disable the Adobe Acrobat Add-in in Microsoft Outlook
Prevent Outlook from freezing by disabling the Adobe PDFMaker COM Add-in, which frequently causes conflicts.
Use WPS Office for Seamless Document and PDF Management
Avoid add-in conflicts and freezing issues caused by heavy integrations. WPS Office is a lightweight, all-in-one suite that includes powerful built-in PDF tools, eliminating the need for bulky third-party PDF extensions.
- 1. Download and Install: Visit the official WPS Office website and download the free installation package for your Windows PC.
- 2. Open your Office files: Launch WPS Office and directly open your existing DOCX, XLSX, and PPTX files with zero compatibility issues.
- 3. Use built-in PDF tools: Click the 'PDF' tab within WPS Office to easily create, edit, or merge PDF documents without relying on external Adobe applications.

Frequently Asked Questions
Why does installing Adobe Acrobat DC cause Microsoft Outlook to freeze?
Adobe Acrobat automatically installs a COM add-in (Acrobat PDFMaker) into Outlook to allow users to save emails as PDFs. If this add-in conflicts with your specific version of Office or encounters performance issues, it can cause Outlook to become unresponsive or crash.
How do I fix the 'cannot verify subscription' error in offline mode?
This error occurs when Acrobat cannot reach the licensing servers for an extended period. To fix it, either connect the computer to the internet temporarily to refresh the license token, or use Adobe's offline activation portal on a different device to generate an offline exception code.
Can I save emails as PDFs without using the Adobe Acrobat add-in?
Yes. You can use the native 'Microsoft Print to PDF' feature available in newer Windows versions, or use an all-in-one suite like WPS Office, which natively supports saving and managing PDF documents without relying on third-party integrations.




