Add To Trusted Sites
If you encounter an error when trying to install the toolbar you make need to add the following site to your trusted sites.
Search for and open Internet Options
Navigate to security then select trusted site and press the sites button
Copy and paste https://exceltoolbar.tcaingauge.com/ into the textbox and press add
Once this is complete run a browser in private mode:
and download the set up file again. It should run correctly now.
Toolbar is installed but doesn't show up.
In some case the toolbar may not install correctly and as a results not function or show up in excel.
When this occurs you may receive an error when uninstalling it and have trouble reinstalling the toolbar.
Warning. The following steps may affect other installed addin so be sure to uninstall them and reinstall them afterwards.
Remove ClickOnce cache folder.
1. Uninstall the Add-in
2. Remove any other add-ins, since they will most likely be affected
3. Open an explorer window to the ClickOnce cache folder,
a. for XP: C:\Documents and Settings\<user>\Local Settings\Apps\2.0,
b. for Vista and Windows 7, 8, 10: C:\Users\<user>\AppData\Local\Apps\2.0
c. Press the Windows button
d. In the Start Search text box type "%LocalAppData%, press Enter
e. Go to the 'Apps' directory and delete the '2.0' folder
4. Reinstall the add-in
Another Installation Method
This link is for bat file that will do some additional check before doing the install. This process typically resolve the installation issues but you should do the 2 prior steps before doing this.