File Explorer preview not working on new Nitro Pro13 install

[Darcy Loewen]

I just purchased & installed Nitro Pro 13 yesterday, but I still can't preview pdf docs in File Explorer's preview pane. I'm running Win10 64-bit. I've repaired the installation using the Control Panel Repair tool. I've re-registered the DLL file. None of these have helped. Since I just installed it yesterday, I can't see that reinstalling it will really help either. What is the solution to this apparently common problem?

[Allain Umailin]

Hello @Darcy Loewen,

Thank you for reaching out to us through our Community Forums and our sincere apologies for this inconvenience.

Let us try some troubleshooting by referring to these steps:

1. Clear the content of the directory under C:\users\your_username\Appdata\local\temp. For whatever reason, not all temp files automatically remove themselves and is NOT usually caused by Nitro Pro files. Kindly note Appdata folder is hidden and to unhide it, please refer to this article https://cybertext.wordpress.com/2012/05/29/cant-see-the-appdata-folder/ 

2. Download and run our Clean Up utility to uninstall your Nitro Pro:  http://install.nitropdf.com/professional_13241467/install-cleanup/install-cleanup.zip

NOTE: This clean-up tool will erase any existing signature files within Nitro so please save them to another location before using the clean-up tool in order to keep them. Please see this link for backing up custom stamps/signatures: https://kb.gonitro.com/knowledgebase#/search/stamps/000004307 

3. Clear all your downloads folder or delete all downloaded Nitro installers. This step is important because we noticed that if you are saving all the installers and you download them in the same folder (like the downloads folder), the EXE can pick up any MSI installer in that folder and you may pick-up one of the older builds instead of the newly downloaded package.

4. Download and install Nitro Pro 13.24 using below offline installers:

x32 http://install.nitropdf.com/professional_13241467/en/retail/nitro_pro13_ba_x86.msi 
x64 http://install.nitropdf.com/professional_13241467/en/retail/nitro_pro13_ba_x64.msi

If you are not sure which to pick, this will help: https://kb.gonitro.com/knowledgebase#/search/64/000003790 

5. After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering your serial number.
 
Thank you very much in advance and I am looking forward to hearing back from you. 

[Darcy Loewen]

I've followed these instructions and now some pdfs will show in the preview, but definitely not all. And it seems quite random which ones do and which ones don't. I did notice, though, that any local copies of pdfs in my Dropbox folder won't preview, but any new ones that have to be downloaded will preview the first time but not after that.

[Darcy Loewen]

I'm still experiencing these issues. Does anyone have a solution for this?

[Allain Umailin]

Hello @Darcy Loewen,

Thank you for your private message and my apologies for the delay.

In order to further assist you, please refer to these steps to update your Nitro Pro 13 to the latest build which is 13.29.2.566:

1. Clear the content of the directory under C:\users\your_username\Appdata\local\temp. For whatever reason, not all temp files automatically remove themselves and is NOT usually caused by Nitro Pro files. Kindly note Appdata folder is hidden and to unhide it, please refer to this article https://cybertext.wordpress.com/2012/05/29/cant-see-the-appdata-folder/ 

2. Download and run our Clean Up utility to uninstall your Nitro Pro:   http://install.nitropdf.com/professional_13292566/install-cleanup/install-cleanup.zip

NOTE: This clean-up tool will erase any existing signature files within Nitro so please save them to another location before using the clean-up tool in order to keep them. Please see this link for backing up custom stamps/signatures: https://kb.gonitro.com/knowledgebase#/search/stamps/000004307 

3. Clear all your downloads folder or delete all downloaded Nitro installers. This step is important because we noticed that if you are saving all the installers and you download them in the same folder (like the downloads folder), the EXE can pick up any MSI installer in that folder and you may pick-up one of the older builds instead of the newly downloaded package.

4. Download and install Nitro Pro 13.29 using below offline installers:

x32 http://install.nitropdf.com/professional_13292566/en/retail/nitro_pro13_ba_x86.msi
x64 http://install.nitropdf.com/professional_13292566/en/retail/nitro_pro13_ba_x64.msi

To know if you have 32-bit or 64-bit, please refer to this article: https://support.microsoft.com/en-ph/help/15056/windows-32-64-bit-faq

5. After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activate by entering your serial number.

6. Re-register the DLL file using the following Administrator command (Admin CMD): 

For 32-bit:
regsvr32 -u "C:\Program Files (x86)\Nitro\Pro\13\NitroPDFPreviewHandler.dll" 
regsvr32 "C:\Program Files (x86)\Nitro\Pro\13\NitroPDFPreviewHandler.dll" 

For 64-bit:
regsvr32 -u "C:\Program Files\Nitro\Pro\13\NitroPDFPreviewHandler.dll" 
regsvr32 "C:\Program Files\Nitro\Pro\13\NitroPDFPreviewHandler.dll"
 
Thank you very much in advance and I am looking forward to hearing back from you. 

[Darcy Loewen]

I followed those instructions to update Nitro to version 13.29.2.566, but the issue persists. What's the solution for this issue?