I has been several days now I'm getting a blank screen when I try lo launch Teams.
Looking for solution around, the only one that actually worked for me is to resize the window. It seems an electron issue on rendering the page.
This is not as much a bug report, as a feedback on something you should fix.
OS is Ubuntu 18.
This teams-startup.log, not sure if that missing "hooks.json" is the problem.
Error while parsing hooks JSON. Error: "ENOENT: no such file or directory, open '/home/myuser/.config/Microsoft/Microsoft Teams/hooks.json'"
(node:15363) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(node:15363) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 ecsSettingsUpdated listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
(node:15363) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 appInitialized listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
(node:15363) UnhandledPromiseRejectionWarning: Error: LocalStorageService: key or value not defined
at m.<anonymous> (/usr/share/teams/resources/app.asar/main.bundle.js:1:375928)
at Generator.next (<anonymous>)
at /usr/share/teams/resources/app.asar/main.bundle.js:1:374186
at new Promise (<anonymous>)
at i (/usr/share/teams/resources/app.asar/main.bundle.js:1:373931)
at m.setValue (/usr/share/teams/resources/app.asar/main.bundle.js:1:375870)
at t.AppLevel.set (/usr/share/teams/resources/app.asar/main.bundle.js:16:667207)
at t.AppLevel.get (/usr/share/teams/resources/app.asar/main.bundle.js:16:667165)
at /usr/share/teams/resources/app.asar/main.bundle.js:16:673433
at Array.reduce (<anonymous>)
(node:15363) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:15363) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.