QB Issue Resolution:

Look here for Solution 2:

https://community.intuit.com/questions/723073-qb-2012-loan-manager-will-not-open

You have to apply that fix.

Resolution for Issue 'Loan Manager not opening how come? keep getting a window that pops up saying “This page can’t be displayed”' available: Yes (Solved).
Source: Intuit Community forum.

Loan Manager not opening how come? keep getting a window that pops up saying “This page can’t be displayed”: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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