Windows 10 Cumulative Update KB5003173 Fails to Install for Some, Here’s the Fix May 13, 2021 11:49 GMT The latest CU might fail to install for some Microsoft has released new cumulative updates for Windows 10 earlier this month as part of the May 2021 Patch Tuesday cycle, but as it turns out, not everything is running smoothly for users running version 2004 and 20H2. More specifically, installing cumulative update KB5003173 fails with error code 0x800f0922, something that obviously doesn’t say too much about the actual cause of the problem and therefore leaving users all alone in their attempt to install the update. A recent report reveals that what might be causing the installation of cumulative update KB5003173 to fail is a change concerning Microsoft Edge.