TBarCode Office Listed as Disabled Application-Add-In

TBarCode Office Listed as Disabled Application-Add-In

Under specific circumstances Word or Excel disables Application Add-Ins completely, e.g. when the loading time exceeds a limit or when a fatal error occurred during loading.

• Verify if you have installed the latest service packs for your Office (see also the links in the previous FAQ).
• Perform an Office Repair if the problem occurs after a recent Office update.
• Make sure you avoid Roaming User Profiles as they may cause instability with the add-in.
• In several cases a new installation of the add-in combined with cleaning the ClickOnce App Cache may be required - see Repairing a Corrupt ClickOnce Application Cache.
• Temporarily disable your antivirus to determine if it is blocking file access and causing the add-in to be disabled.

How to re-enable the Add-In is described here: How to: Re-enable an Add-in That Has Been Disabled.

Tweak Manifest URL File Prefix

In some cases, where the Excel add-in could not be enabled, the file prefix of the manifest URL needed a modification:

• Open regedit and locate the following registry key (for current user installation)

  HKEY_CURRENT_USER\Software\Microsoft\Office\Excel\Addins\TECIT.TBarCode.ExcelAddIn

• For an all-users installation, locate the key in the HKLM hive (including Wow6432Node).
• In the Manifest string value remove the file:/// prefix, the resulting URL should look like C:/Program Files (x86)/TEC-IT/TBarCodeOffice 11/bin/Excel/TECIT.TBarCode.ExcelAddIn.vsto
• Try to re-enable the add-in again.