Reports Builder wont open in Windows 10 64bit - [SOLVED]

Though Oracle doesn't support Forms 10g in Windows 10: 64 bit, I had installed it and was working till last month. Then suddenly one fine day, the report builder window won't show up. Though it was running in the task bar, I couldnt do anything with it. Forms builder was working properly.

Then taking cue from this Oracle form community post, I copied the cauprefs.ora from my colleague. Boom, the Report builder started to show up.

Then spend some time analyzing changes of the backup file with my file obtained from my colleague. It showed differences in the section where x, y coordinates were saved for Reports preferences.

====cauprefs.ora Backup file (Report Builder not opening)
Reports.root_ht = 725
Reports.root_max = No
Reports.root_wd = 1333
Reports.root_x = "-32000"
Reports.root_y = "-8"
Reports.root_y = "-32000"

====cauprefs.ora from my colleague (Report Builder opening properly)

Reports.root_ht = 725

Reports.root_max = No

Reports.root_wd = 1333

Reports.root_x = "-8"

Reports.root_y = "-8"

Reports.root_y = 0

The highlighted lines were causing the problem, and once replaced my problem is solved.

Edit: 3/July/2024:

The file cauprefs.ora is located on the root directory of your Forms installation. For example if your Forms and Reports are installed in C:\DevSuiteHome_1, the file will be in the same folder.

Take a backup of the file if you are unsure of the changes.