Error code 401 appears while opening the document

[Ambar Vishal]

I am using Nitro Pro 12 and now Error code 401 appears while opening the document. facing huge problem.

Edited October 4, 2021 by Ambar Vishal

[Ambar Vishal]

Hi, i have the same problem: my serial number don't be accepted by V13

I would upgrade my V12 to V13 because V12 crash 

I am using Nitro Pro 12 and now Error code 401 appears while opening the document. facing huge problem.

[Allain Umailin]

Hello @Ambar Vishal,

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

In order to further assist you, could you please open your Nitro Pro 12, confirm the error message, logout from Nitro Sign at the upper-right corner of the program, close then relaunch Nitro Pro, reset your Nitro Sign password and re-login Nitro Sign? How did it go?

If the error re-occurs after few days, please provide a screenshot of your 'About Nitro Pro' window under Help tab.

This window should show the exact build of the program and its serial number (format is 12.X.X.X, e.g. 12.0.0.112). 

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

[Ambar Vishal]

Thanks for your reply!

I don't know how to insert image from URL but the error code 401 is still appearing while opening any document. Although I have gone through the solutions as suggested by you.

Thanks

[Allain Umailin]

Hello @Ambar Vishal,

Thank you for this information and our sincere apologies for the inconvenience.

To further assist you, we recommend upgrading to our latest version, Nitro PDF Pro 13, which comes with significant stability and security improvements, as well as many feature enhancements, in particular in conversion and OCR functions. To upgrade to Nitro PDF Pro 13, please visit our Upgrade page https://www.gonitro.com/pro/upgrade 

Rest assured that our page will recognize your Nitro Pro 12 serial number after making adjustments in your account records.

Thank you for choosing Nitro and I hope this helps.

[Ambar Vishal]

The upgrade of Nitro into "Nitro PDF Pro 13" is chargeable.

Again I need to pay against this update, although I don,t require at this point of time as my nitro 12 is matching my requirements.

Kindly suggest,

Regards 

[Allain Umailin]

Hello @Ambar Vishal,

If you prefer staying with Nitro Pro 12, let us try some troubleshooting by referring to these steps:

1. Open your Nitro Pro and log out from your Nitro Sign by clicking the drop-down arrow and selecting Logout. This should be below the 'X' Close button of your program.

2. Download and run our Clean Up utility to uninstall your Nitro Pro:  http://install.nitropdf.com/professional_12169574/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 12.16.9 using below offline installers:

x32 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_ba_x86.msi
x64 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_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 v12 serial number

6. Reset your Nitro Sign password, login back to Nitro Sign by clicking 'Log In' button.

If the error re-occurs after few days, please let me know so we can check our resources.

Thank you for choosing Nitro and stay safe always.

[Ambar Vishal]

Thank you very much for your response and help.

I have applied the procedure, suggested by you to resolve the matter. But after few hours, the same error came up.

kindly, suggest for further action.

Now it is hampering my work.

I really appreciate your help and support.

Thanks n Regards, 

[Ambar Vishal]

I have received the solution of my problem.

Thanks a million.