We can easily fix every type of error in QuickBooks but for proper fixing, some solutions need to be followed and each type of error has a unique and different solution that needs to be followed. So, the steps to fix the issue of QuickBooks error 15101 are listed below.

Solution 1) Digital Signature Certificate must be installed

1. The most basic step is to download and install the most important 'Digital Signature Certificate' from the web in your system.
2. Now, look for the 'QBW32.exe' file on your PC.
3. You can also use the 'Windows Search' option from your system.
4. Select 'More results' in the Windows Search menu.
5. When the next screen appears, then click on the 'Computer' icon.
6. Now search for 'QBW32.exe' and press right click and then select the 'properties' menu.

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