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+id = 1954
+title = "guest-fsfreeze can't work well on windows"
+state = "closed"
+created_at = "2023-10-22T09:06:59.577Z"
+closed_at = "2023-10-26T08:53:35.036Z"
+labels = []
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1954"
+host-os = "centos8"
+host-arch = "x86"
+qemu-version = "n/a"
+guest-os = "Windows 10"
+guest-arch = "x86"
+description = """I used qemu 5.0 to cross-compile windows gqa on the fedroa30 system.And install it on guest with windows10,but i can't work well."""
+reproduce = """1. ./configure --cross-prefix=x86_64-w64-mingw32- --enable-guest-agent-msi --with-vss-sdk=/root/vssdk/VSSSDK72 
+   
+  my vssdk download from:[vssdk](https://www.microsoft.com/en-us/download/details.aspx?id=23490),i install it on my pc and copy to /root/vssdk/VSSSDK72 
+   
+2. make qemu-ga -j4
+
+3. and then install qemu-ga-x86_64.msi on windows10,it report the error:
+   ![image](/uploads/b03b95e7b1b4519a153deadfbbaec751/image.png)
+
+4.then I ./configure not with "--with-vss-sdk",the qemu-ga-x86_64.msi can install successfully.
+
+5.So, I install gga first. Then ./configure with "--with-vss-sdk" to make get the qemu-ga.exe
+
+6.replace qemu-ga.exe and reboot gga service,then execute the command "virsh domfsfreeze" on host,but it report error:
+
+   error: Unable to freeze filesystems
+   error: internal error: unable to execute QEMU agent command 'guest-fsfreeze-freeze': failed to add \\\\?\\Volume{d1ee1072-0000-0000-0000-100000000000}\\ to snapshot set: 
+
+
+**I looked at the windows Event Viewer,it get the error:**
+
+   Unexpected error querying for the IVssWriterCallback interface. hr = 0x80070005, Access is denied.
+
+I have referred to this [document](https://www.ryadel.com/en/volume-shadow-copy-service-error-unexpected-error-querying-for-the-ivsswritercallback-interface-how-to-fix-that/),but it not work."""
+additional = "n/a"