You may discover the underneath purposes behind this mistake 

• Web Connection Error: Unknown Error 
• Document Exists: The record you indicated can't be opened. Ensure that it isn't being utilized by some other program. 

Note: if you stuck into any other QBerror then visit QBsupport page

Foundations for QBError Code 15240 

• Inappropriate Internet Explorer settings 
• Erroneous Date and Time in your framework 
• Misconfiguration with firewall settings 
• Activities before investigating this blunder 
• A. Make a Company File Backup 
• Open QB
• Go to File > Back Up Company > Create Local Backup 
• Presently adhere to onscreen directions to make an organization record reinforcement 

Update QBDesktop 

Close QBand press and hold the Ctrl key from the console. During this process please do not turn off your PC.

• Go to Help > Update QBDesktop… 
• Snap-on Update Now tab to the top 
• Snap Get Updates 
• Once QBupdate effectively click on Close 

Snappy Note: Process to fix this issue may be complex, you can talk with our QBsupport for a brisk arrangement. Call on QBsupport number or leave us your message. 

Read More:-How to Fix QuickBooks Update Error 12007

6 Simple Steps to Fix QBError 15240 

Stage 1: Run QBas an Administrator 

1. Close QBDesktop 
2. Presently make a right-click on QBDesktop symbol 
3. At that point select Run as executive 
4. In the event that asks, click on Yes to permit client consents. 
5. QBError 15240 

Stage 2: Verify Date and Time Settings 

• Press Windows+R keys from the console to open Run 
• Type Control and snap OK 
• At that point click on Clock and Region > Date and Time 
• Snap-on Change date and time… 
• Empower the progressions and snap OK 

Stage 3: Allow Windows consent to QBFolders 

• Close QB
• Explore to C:\Program Files (x86) 
• Presently search for Intuit organizer and make a right-click on it 
• At that point select Properties 
• Presently pick the Security tab and select Advanced 
• Guarantee that the proprietor of the envelope is the User gathering. If not, follow the underneath steps. 
• Take responsibility for envelope 
• Snap-on Change close to Owner 
• Enter User under the article name to choose, and click Check Names 
• At that point click OK 
• Presently make a beware of Replace proprietor on subfolders and items 
• At that point, click Apply and OK 
• Presently you're back on the Intuit Properties, click on Edit 
• Presently select the User gathering and make a mind Full Control 
• At that point click on Apply and OK 

Stage 4: Verify Internet Explorer Settings 

• Press Windows+R keys from the console to open Run 
• Type inetcpl.CPL and snap OK 
• Go to Advanced tab and under the security segment, make a point to check SSL 3.0 

Stage 5: Verify your Firewall settings 

In case you're utilizing an outsider firewall in your PC for security reasons, ensure that the underneath documents have full access to experience from the firewall. 

• qbw32.exe 
• qbupdate.exe 
• You may need to contact your firewall client service and they may assist you with checking about the above documents. 

Stage 6: Reinstall QBUsing Clean Install 

Significant: This instrument doesn't work with QB2020. In case you're confronting this blunder code in QB2020. Kindly do a straightforward uninstall and reinstall of QuickBooks. 

• First, you need to Uninstall QB
• Then click Windows+R keys together to open a Run 
• After that type appwiz.cpl and click OK 
• Under Programs and Features select QBand snap Uninstall 
• Snap Yes, If prompts you 
• Snap Next and pick Remove 
• At that point Next and afterward Remove 
• It might require some investment to uninstall QBfrom your PC 
• When establishment wizard effectively uninstalled QuickBooks, click Finish 
• Presently you can run Clean Install Tool 
• Download and Install QBTools Hub 
• At that point make a double tap on QBTool center symbol on the work area 
• On the off chance that asks, click on Yes 
• Once QBTool Hub is an open snap-on Installation Issues 
• Snap-on Clean Install Tool 
• At that point pick your QBVersion and Product Version (see a picture underneath) 
• At that point click Continue 

Conclusion

Subsequent to following all the above advances you'll no longer face QBError Code 15240 however on the off chance that it despite everything exists if you don't mind talking with our specialists. You can call on QBsupport number to get a full support service or leave us your message.

Source:- https://topsitenet.com/article/516589-qberror-15240-when-download-t...