Varieties of QLB Files

Main QLB Affiliation

.QLB

Formatting:	.qlb
Category:	Microsoft QuickBasic Library File

A QLB file is a library file associated with QuickBasic (now Visual Studio).

Developer:	Microsoft Corporation
Kind:	Developer Files
Entry:	HKEY_CLASSES_ROOT\.qlb

Software Programs That Open The Microsoft QuickBasic Library File:

Microsoft Visual Studio by Microsoft Corporation

Windows

Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Troubleshoot QLB Files

Common QLB Opening Problems

Microsoft Visual Studio Disappeared

Double-clicking your QLB file prompts the message "%%os%% Can't Open QLB File". If so, it typically means that you don't have Microsoft Visual Studio installed for %%os%%. Your operating system cannot associate your QLB with Microsoft Visual Studio, so double-clicking the file won't work.

Tip: Another QLB-related program can be selected to open the file by clicking "Show Apps" and finding the application.

Outdated Microsoft Visual Studio

Your Microsoft QuickBasic Library File file is incompatible with Microsoft Visual Studio because you might have the wrong version installed. If you've got the wrong version of Microsoft Visual Studio installed, you'll need to install the correct version. The primary cause of this problem is that your Microsoft QuickBasic Library File file was created by a different (newer) version of Microsoft Visual Studio than what's installed.

Tip: Find clues on the correct software version by right-clicking your QLB file and clicking "Properties".

Conclusion: The majority of QLB file opening issues are due to not having the correct Microsoft Visual Studio version installed.

Other QLB File Opening Causes

Although you might already have Microsoft Visual Studio or another QLB-associated software installed on your computer, you can still encounter problems opening Microsoft QuickBasic Library File files. If you are continuing to have errors with loading QLB files, other external issues might be to blame. These other problems include (listed in order from most to least common):

• File references in the Windows Registry for QLB are wrong
• Mistaken removal of the Windows registry QLB description
• Microsoft Visual Studio or another QLB application experienced a flawed installation
• QLB file corruption
• Your QLB has adversely impacted by malware
• Device drivers of the hardware associated with your QLB file are corrupt or out-of-date
• Your PC doesn’t have enough available resources to open the Microsoft QuickBasic Library File file