Nitro Crashes the system

[Narayanan R]

Problem Event Name:    APPCRASH
  Application Name:    DllHost.exe
  Application Version:    6.1.7600.16385
  Application Timestamp:    4a5bc6b7
  Fault Module Name:    npdf.dll
  Fault Module Version:    12.7.0.395
  Fault Module Timestamp:    5bfb50eb
  Exception Code:    c00000fd
  Exception Offset:    0056ea97
  OS Version:    6.1.7601.2.1.0.256.48
  Locale ID:    1033
  Additional Information 1:    fb49
  Additional Information 2:    fb497e3d5bdebe084910387356425efc
  Additional Information 3:    2896
  Additional Information 4:    289645c80fa069699b790825888c610f

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[Allain Umailin]

Hello @Narayanan R,

Thank you for reaching out to us through our Community Forums!

In order for me to further assist you with your concern, could you please provide the following?:
-Is this a new issue or has it occurred since after installing Nitro Pro? Any changes you are aware of before this happened?
-The serial number of your Nitro Pro. To send it via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. 
-What is your workflow resulting this crash? Are you opening a specific PDF file? 

Thank you very much in advance and I am looking forward to hearing back from you.

[Allain Umailin]

Hello @Narayanan R,

Thank you for sending me a private message with the information I requested.

Since you are still working with 12.7, 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.

2. Download and run our Clean Up utility to uninstall your Nitro Pro: http://install.nitropdf.com/professional_12163574/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. Please 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 12.16 using below offline Business installers:

x32 http://install.nitropdf.com/professional_12163574/en/vlp/nitro_pro12_x86.msi 
x64 http://install.nitropdf.com/professional_12163574/en/vlp/nitro_pro12_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 and entering your serial number.
 
Thank you very much in advance and I am looking forward to hearing back from you.