"Couldn't parse iCalendar"

[foresterr]

Recently my work calendar feed (Office 365) after working for months if not years stopped working and always returns "Couldn't parse iCalendar" error message. That happens both when using the url, or downloaded .ics file. I'm not sure if this is a bug or Microsoft did something Microsofty to their feeds. Does anyone know a way I can validate the ics file?

[muehlber]

I have the same since a few days.

The ICSX5 debug log gives me a "kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
Caused by: net.fortuna.ical4j.data.ParserException: Error at line 425:Components nested too deep" -- not sure if this is a reference to the .ics file that I'm trying to import? l.425 is "BEGIN:VEVENT" several weeks in the past, same for the events before that line.

[Gene-W]

I also have sudden parsing error with Office 365 shared calendar. I checked with my IT, they have not implemented any new DLP settings. I'm guessing MS changed something upstream and rendered the .ics unreadable.

[mrondr]

Same here unfortunately. Here's the full error I get.
Seems more of a ical4j error though.

Couldn't parse iCalendar

at.bitfire.ical4android.InvalidCalendarException: Couldn't parse iCalendar
at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:91)
at at.bitfire.ical4android.Event$Companion.eventsFromReader(Event.kt:79)
at at.bitfire.ical4android.Event$Companion.eventsFromReader$default(Event.kt:78)
at at.bitfire.icsdroid.ProcessEventsTask$processEvents$downloader$1.onSuccess(ProcessEventsTask.kt:121)
at at.bitfire.icsdroid.CalendarFetcher.fetchNetwork$icsx5_72_2_1_1_standardRelease(CalendarFetcher.kt:157)
at at.bitfire.icsdroid.CalendarFetcher$fetchNetwork$1.invokeSuspend(CalendarFetcher.kt:0)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
Caused by: net.fortuna.ical4j.data.ParserException: Error at line 407:Components nested too deep
at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:172)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:197)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:185)
at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:89)
... 11 more
Caused by: java.lang.RuntimeException: Components nested too deep
at net.fortuna.ical4j.data.DefaultContentHandler.startComponent(DefaultContentHandler.java:104)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:441)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendar(CalendarParserImpl.java:128)
at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendarList(CalendarParserImpl.java:194)
at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:163)
... 14 more

[UserX404]

Same here, running on 2.1.1-standard and happens since the last weekend (~8. - 10. dec)

Manually pull down to refresh also doesn't work for me.

Logs:

Couldn't parse iCalendar

at.bitfire.ical4android.InvalidCalendarException: Couldn't parse iCalendar
	at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:91)
	at at.bitfire.ical4android.Event$Companion.eventsFromReader(Event.kt:79)
	at at.bitfire.ical4android.Event$Companion.eventsFromReader$default(Event.kt:78)
	at at.bitfire.icsdroid.ProcessEventsTask$processEvents$downloader$1.onSuccess(ProcessEventsTask.kt:121)
	at at.bitfire.icsdroid.CalendarFetcher.fetchNetwork$icsx5_72_2_1_1_standardRelease(CalendarFetcher.kt:157)
	at at.bitfire.icsdroid.CalendarFetcher$fetchNetwork$1.invokeSuspend(CalendarFetcher.kt:0)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
Caused by: net.fortuna.ical4j.data.ParserException: Error at line 254:Unexpected end of file
	at net.fortuna.ical4j.data.CalendarParserImpl.nextToken(CalendarParserImpl.java:657)
	at net.fortuna.ical4j.data.CalendarParserImpl.access$1500(CalendarParserImpl.java:56)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:232)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
	at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
	at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
	at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendar(CalendarParserImpl.java:128)
	at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendarList(CalendarParserImpl.java:194)
	at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:163)
	at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:197)
	at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:185)
	at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:89)
	... 11 more

[Gene-W]

I'm most convinced that this is an ongoing server-side issue with Microsoft. Hopefully they fix it.

[meju25]

I get exactly the same error message.
If I download the .ical File and try to open it with Outook on Windows, I also get an error:

So seems that even MS Outlook cannot read the .ics files created by MS office365 server.

[meju25]

For me it works again since today (2023-12-13) around 16:30 CET

[mrondr]

I confirm it is also fixed for me now

[muehlber]

Same here.

[UserX404]

Back on track. ;-)

[Gene-W]

Here also, all working again 👍