Hello Larry,
Thank you for your message.
These issues with your Viewers might be occurring due to the Viewer's configuration file being somehow damaged/corrupted (for example, by some antivirus/firewall software activity).
Please, try the following:
1. Fully exit the Viewer
File -> Exit.
2. Locate the file
config_4.xml in the
C:\Users\[Your_username]\AppData\Roaming\Remote Utilities Files\ folder.
Please note that the AppData folder might be hidden by default in which case you need to enable "Hidden files and folders" in Windows Explorer settings.
3. Remove the
config_4.xml file from that folder.
This will reset the Viewer settings, i.e. your address books won't be affected by this action but you will need to register Viewer with your license key once again following
this guide.
However, since you have mentioned that your address book connections are also missing on one of your Viewers, please try restoring the address book from an automatically created backup file by following
this guide.
Please note that the automatic daily backups for address books are enabled by default and include the general (default) address book as well as any custom address book that was added to the Viewer. All backups are stored in the following location:
C:\Users\user_name\AppData\Roaming\Remote Utilities Files\backups\.
In case if resetting the Viewer's configuration file does not help to resolve the issue, please also try fully uninstalling Viewer as described in
this tutorial. After uninstalling please reboot the Viewer PC and try re-installing Viewer from scratch. However, before uninstallation please make sure to copy a backup of your address book from the folder listed above, so you can restore your connections later.
Last but not least, in case if you have any antivirus/firewall software installed on your Viewer machines, please make sure to add the Viewer installation folder
C:\Program Files (x86)\Remote Utilities - Viewer\* to the exception list to avoid similar issues in the future.
Hope that helps.