# Error : Cannot open database
**URL:** https://forum.syncthing.net/t/error-cannot-open-database/20602
**Category:** Support
**Created:** [August 2, 2023, 9:57am UTC](https://forum.syncthing.net/t/error-cannot-open-database/20602 "2023-08-02T09:57:13Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Tony](https://forum.syncthing.net/u/Tony)
#### Post date: [August 2, 2023, 9:57am UTC](https://forum.syncthing.net/t/error-cannot-open-database/20602/1 "2023-08-02T09:57:13Z")
We met some issues when running SyncTrayzor , OS is Windows 10 . The issue is once the synctrayzor was unloaded and setup it up it again , the syncthing service can not be started. The error message is as below : Fail to start syncthing.
After we used the menu to kill all the zombie syncthing process the error message still popup.
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### Author:  [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [August 2, 2023, 10:10am UTC](https://forum.syncthing.net/t/error-cannot-open-database/20602/2 "2023-08-02T10:10:38Z")
Does this happen after restarting Windows as well? If yes, then it still looks like you’ve got more than one Syncthing instance running and trying to use the same database. Seeing the error message in full would be useful too.
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### Author:  [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [August 2, 2023, 1:47pm UTC](https://forum.syncthing.net/t/error-cannot-open-database/20602/3 "2023-08-02T13:47:56Z")
Probably the reinstall downgraded Syncthing. There are threads on this, you’ll need to download a newer Syncthing binary and place it where synctrayzor expects.
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### Author:  [@system](https://forum.syncthing.net/u/system)
#### Post date: [September 1, 2023, 1:48pm UTC](https://forum.syncthing.net/t/error-cannot-open-database/20602/4 "2023-09-01T13:48:06Z")
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