If the Nitro PDF Pro Outlook add-in was intended to be installed but is missing, the following article provides troubleshooting help to correct the issue.
Steps to re-enable a missing Nitro PDF Pro Outlook add-in:
Step 1: Options. Within Microsoft Outlook, select "File", then "Options".
Step 2: Add-ins. On the "Outlook Options" dialogue box, select "Add-Ins" from the left-hand side navigation pane.
Step 3: Com Add-Ins. Select "COM Add-Ins" and press "Go" to see the list of Add-Ins:
Step 4: Validate. On the ensuing prompt, please ensure the Nitro PDF Pro Add-In is checked (and if not, put a checkmark in it):
Step 5: Disabled. If the Nitro PDF Pro Add-In is not on the list, return to the "Outlook Options" settings and select Disabled Items:
Step 6: Re-enable. Please check the Disabled Items list to see if Nitro PDF Pro is listed, and if it is, select Nitro PDF Pro, and press "Enable".
Steps to re-enable the Nitro PDF Pro Add-in for Outlook when disabled due to slow loading:
Microsoft does monitor load times for all Add-ins. Depending on your environment, Outlook may disable the Nitro PDF Pro Add-in if it takes longer than the threshold to launch. To re-enable an Add-in that has been disabled due to slow loading times, perform the following steps:
Step 1: Manage. Click "File", "Manage COM Add-ins":
Step 2: Monitoring. On the Slow and Disabled Add-ins dialog, select Nitro PDF Pro Outlook Addin and choose "Do not monitor this add-in for the next 30 days":
By following the above steps, users can troubleshoot and reenable their disabled or missing Nitro PDF Pro Outlook add-in.
For additional support or to report issues:
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Submit a Support Ticket here: www.gonitro.com/support/ticket
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Post on the Community Forum here: Nitro Community Forum