Blizzard Battle.net Desktop App Stuck at Scanning Game Files

When the Blizzard Battle.net desktop app is started it automatically starts a Scan and Repair
Scanning game files in infinite loop

If your game is stuck in a scan and repair loop these steps should help resolve the issue.

Open the Blizzard Battle.net desktop app.
Select the game that is having the issue.
Click Options and select Show in Explorer.
Follow the path below to the data folder.
- Diablo III: \Diablo III\Data\data
- Heroes of the Storm: \Heroes of the Storm\HeroesData\data
- Overwatch: \Overwatch\data\casc\data
- StarCraft II: \StarCraft II\SC2Data\data
- World of Warcraft: \World of Warcraft\Data\data
Delete every *.IDX file in the data folder.
- Delete the CASCRepair.mrk file if it exists in your World of Warcraft data folder.
Run a Scan and Repair on the game to rebuild the *.IDX files.

Note: Do not delete any of the Data.### files.

Open the Blizzard Battle.net desktop app.
Select the game that is having the issue.
Click Options and select Reveal in Finder.
Follow the path below to the data folder.
- Diablo III: \Diablo III\Data\data
- Heroes of the Storm: \Heroes of the Storm\HeroesData\data
- Overwatch: \Overwatch\data\casc\data
- StarCraft II: \StarCraft II\SC2Data\data
- World of Warcraft: \World of Warcraft\Data\data
Delete every *.IDX file in the data folder.
- Delete the CASCRepair.mrk file if it exists in your World of Warcraft data folder.
Run a Scan and Repair on the game to rebuild the *.IDX files.

Note: Do not delete any of the Data.### files.

If you have tried these steps and still require assistance, please visit our Technical Support Forums or contact us.

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