Avg updating file
Although the original software of this designated file type might be eclipsed by newer version (eg.
Excel 97 versus Office 365), this file type is still actively supported by the current software version.
If you do not have the proper version ISAPI Loader (or any of the other programs listed above), you may need to try downloading a different version of it, or one of the other software applications listed above.
This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.
Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.
In some cases, you might have a newer (or older) version of a ISAPI Loader New ISAPI Application file that is unsupported by your installed application version.
File Extension UPDATE files have been identified on both desktop and mobile devices.
Also, you can learn how to do some basic UPDATE file troubleshooting if you are having trouble opening these files.