Question: why the CLSID-s of PDFCreator cannot be backward compatible? To have CLSID-s backward compatible, please open your VB6. Use the “response” ASP object to stream the document to the browser directly, or write the data into the output “response” object. A Byte array is required. Use the GetBuffer method of PDF Creator Pilot to get the generated PDF document as a byte array. Use the following code: Response.Clear Response.ContentType = “application/pdf”.
When trying to preview attachments in Microsoft Outlook, you may receive a message that says “This file cannot be previewed because there is no previewer installed for it.” Here’s how you can fix this in most cases.
Fix 1 – Ensure Application is Installed
![Can T Get Clsid For Pdf Creator Can T Get Clsid For Pdf Creator](/uploads/1/2/5/8/125848309/537135562.gif)
Ensure that the application used to open the file is installed. Excel for spreadsheets, Word for documents, and Adobe Reader for PDF files.
Fix 2 – Check Attachment Handling Settings
- In Outlook, go to “File” > “Options” > “Trust Center” > “Trust Center Settings…” > “Attachment Handling“.
- Ensure that “Turn off Attachment Preview” is NOT checked.
- Select the “Attachment and Document Previewers…” button.
- Make sure that the previewer you wish to use is checked, then select “OK” three times.
![Acrobat Acrobat](https://www.colorpilot.com/files-pdflib/manual43/source/Images/delphi_screen3.gif)
Fix 3 – Windows Registry Settings
There is commonly a problem where Windows is not configured to let Outlook preview Microsoft Office files such as Word, Excel, Visio, and PowerPoint files. Follow these steps to fix it.
- Download PreviewFix.zip.
- Open the file and double-click “PreviewFix.reg“.
- When prompted, select “Yes” to import the file into the registry.
Try to preview an Office file from Outlook now.
Fix 4 – Enable Windows Firewall
This is a strange one. But some user have reported that enabling the Windows Firewall fixes their issue. Follow these steps to ensure it’s on.
- Select the “Start” button, then select “Settings“.
- Navigate to “Update & Security” > “Windows Security” > “Firewall & network protection“.
- Choose a network profile, and then under “Windows Defender Firewall“, turn the setting to “On“.
Fix 5 – PDF Registry Fix
This fix is for users of 64 bit versions of Windows experiencing problems with previewing PDF files in Outlook.
- Select the “Start” button, then type “regedit“.
- Select and open the Registry Editor.
- Navigate to the following location:
HKEY_LOCAL_MACHINE SOFTWARE Wow6432Node Classes CLSID {DC6EFB56-9CFA-464D-8880-44885D7DC193} - Open “AppID“.
- Change the “Value Data” to the following, then select “OK“:
{534A1E02-D58F-44f0-B58B-36CBED287C7C}
Do you have any tricks for fixing the “This file cannot be previewed because there is no previewer installed for it.” message? Share them in the comments section.