Issue Description:
- Suddenly unable to log into the NPrinting web console
- Error message appears in the NP web console: "Error trying to open the page."
Environment
- NPrinting: All Supported Versions
How to solve this issue:
Solution 1: NOTE: Before proceeding below, perform these elemental steps:
- Clear browser cache and close your browser,
- reopen your browser or start an incognito or private browsing session
- attempt to access the NP web console.
If you are still unable to access the NP Web Console (or NewsStand) and you still receive the error message, please proceed as per below.
Step 1: Diagnose the issue:
- Check the certificate as shown in the image below.
- If the certificate is not valid as shown in the image below, go to step 2 to resolve the issue.
Step 2: Update the nprinting.crt and nprinting.key certificate files
- Please update your certificate used to secure the NPrinting Web Console. Contact your certificate vendor for an updated valid certificate
Note: Before replacing the expired files on your NP server, you must prepare them for use with NPrinting. To do so, visit the following links:
Once the certificates are configured correctly as per above, copy the exported certificate
NPrinting.crt and the related private key
NPrinting.key into these folders:
- For the NewsStand: %ProgramData%\NPrinting\newsstandproxy\.
Typical path is C:\ProgramData\NPrinting\newsstandproxy\
- For the Qlik NPrinting web console: %ProgramData%\NPrinting\webconsoleproxy\.
Typical path is C:\ProgramData\NPrinting\webconsoleproxy
Finally, restart your NPrinting Web Engine service and log in as usual
Short term workaround for this issue:
- If your certificate is expired as shown above, you can prevent the 'error trying to open page' message temporarily until a certificate with a valid future expiration date, simply by removing the fully qualified path to the NP server as shown below:
Cause
- Expired certificate used to secure the NPrinting server web console causes "error trying to open page" message and prevent further access to the NP web console