# Bad Image - opencv_imgproc310.dll Is Either Not Designed to Run on Windows or It Contains an Error Upon Snagit Opening

## Problem

After installing Snagit, the program works. However, after restarting the machine, Snagit fails with the following error message:

## Solution

There appears to be a false positive within McAfee security solutions. We have contacted McAfee to find a permanent solution, however, the best workaround at this time is to add the problematic files to the excluded list in McAfee.

If you are receiving the same error message but for different files, see here.

3. Open McAfee.
4. Select PC Security > Real-Time Scanning.
5. Click Turn Off.
6. Select When I restart my PC in the dropdown and click Turn Off.
8. Open McAfee again and select PC Security > Real-Time Scanning.
9. Click the Excluded Files dropdown.
• C:\Program Files\TechSmith\Snagit 2018\opencv_core300.dll
• C:\Program Files\TechSmith\Snagit 2018\opencv_core310.dll
• C:\Program Files\TechSmith\Snagit 2018\opencv_imgproc300.dll
• C:\Program Files\TechSmith\Snagit 2018\opencv_imgproc310.dll
• C:\Program Files\TechSmith\Snagit 2018\opencv_photo310.dll
11. Restart computer and verify if Snagit continues to work. Once the machine is rebooted, the McAfee Real-Time Scanning will be re-enabled.

## Error Returns Referencing Different Files

If the problem returns with an error refering to a different set of files, follow the additional steps below. It is important to add the problematic files before reinstalling Snagit.

1. Add the files that were referenced in the error message to the excluded list in McAfee using the same steps described above.